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DWF – perspective AutoCAD th format for the publication of the design data
In given article the requirements shown to standards for an exchange by figures of designing are considered and possibilities of format DWF are described, technical advantages of use DWF and Autodesk DWF Viewer and Autodesk DWF Composer in comparison with traditional paper technology, and also with competing offers from Adobe reveal.

Own research Autodesk has shown that results of work of one designer usually use on the average other 10 employees of the organisation. It opens for DWF prospect to become excellent means for the teamwork organisation, not demanding presence of CAD-systems and initial CAD-files.

The numerous users applying DWF as a format of data exchange, can get access to the exact information on the project in its almost initial kind. Thus there is no necessity for sharing of initial CAD-files (that excludes all risks peculiar to it such, as illegal acquisition of intellectual property).

Let's consider free programs for work with files in a DWF-format.

Actually, company Autodesk now offers variety of products which form original “a DWF-ecosystem”. All software Autodesk is capable to create now DWF-files. Besides, the company offers free supplement DWF Writer which allows to form DWF-files of any Windows application. Is available at Autodesk and free DWF Viewer which gives the chance to users of viewing, navigation and the press 2D and 3D DWF-files. This product represents the ActiveX-appendix which can as to work independently, and as a part of other appendices that allows to build in DWF-files Word-documents or web-pages. Though this product Autodesk functions only in Windows environment, other companies offer viewers and for platforms Macintosh and Linux.

Company Autodesk offers free DWF Viewer and set DWF Toolkit 7 for software developers.

The unique DWF-appendix from which Autodesk now receives any income – DWF Composer. This working under Windows the program gives the chance to make measurements in DWF-files, to bring comments, and also to modify files, including in them additional sheets, and then again to keep the changed data in a DWF-format. This functionality also distinguishes the given product from base, allowing only to look through and print DWF-files.

Not so long ago Autodesk has let out the third version of free product DWF Writer which offers some new important possibilities. Actually it is the whole tooling which concrete list strongly depends on what options get out at loading of this appendix from site Autodesk. All versions include 2D the DWF-driver of the printer for Windows which provides to any Windows application of possibility of the virtual press in format DWF, generating thus 2D a DWF-file. At use DWF Writer 3 together with any OpenGL-appendix it is possible to create 3D DWF-files. In a sheaf with such packages as CATIA, Pro/ENGINEER, SolidWorks, Solid Edge and NX, the program 3D DWF Writer can work both with separate 3D-details, and with assemblages. Besides, Autodesk offers various plug-ins for “no autodesk” appendices (now – for SolidWorks and Pro/ENGINEER). The built in plug-ins allow to form the 3D DWF-models including even more of the information on details and assemblages, created in CAD-systems.

There was also version DWF Viewer 6.5 in which too there was variety of new possibilities. Users, at last, can do sections of 3D-models, choosing a secant a plane which then can be moved and turned concerning model.

Let's consider new 3D-possibilities DWF.

At use of dialogue window DWF Writer for 3D the definitive DWF-file turns out considerably the smaller size. Though the hierarchy of assemblage remains, but names of details and the data about them (such as weight, a material and the inertia moment) in this case are lost.

Processed DWF Viewer new tools, most important of which – means for moving and rotation of separate details, and also for interactive creation of sections of 3D-models yield users some.

Other useful improvements – for example, possibility to send a DWF-file by e-mail it is direct from DWF Viewer (including a link allowing the addressee of the electronic letter most to load and install a free viewer), and also possibility to drag a mouse DWF-files in documents Microsoft Word, Excel and PowerPoint.

Let's consider prospects DWF.

DWF – rather interesting format of a file. It is the open standard. Actually, this format is a wrapper comprising set of other files (the majority from which open standards also show). Company Autodesk gives an initial code in language C++ for DWF Toolkit as the open source freely accessible each without royalties.

The part of contents DWF is based on independent standards – such, as XML, ZIP/ZLIB, JPG, PNG, TIFF and HSF. Other part (for example, 2D-geometry compression) leans against the technologies developed by company Autodesk for which it gives both the specification, and an initial code.

If to change expansion of any DWF-file on.ZIP by means of Windows Explorer it is possible to see each of these internal files. Try – and learn that in a DWF-file there is such data, as pictures at format JPEG and some XML-files. Uniting, all these data flows form as a result the general DWF-file (2D or 3D) which can be seen by means of DWF Viewer, DWF Composer or any appendix of the foreign developer.

Ability to include additional data flows means that Autodesk and other developers can expand present possibilities DWF.

It is obvious that DWF the big future is prepared. Possibly, it becomes the basic format for an exchange CAD-given, distributions and the press of the design documentation, working out of estimates, and is possible, even in manufacture. Company Autodesk and its partners only start to maintain possibilities DWF. Therefore it is much more important to understand, what this format can become in the long term.

Becomes obvious that potential DWF is much more powerful, than it seemed in the beginning. In certain cases DWF can even serve as a wrapper for other formats. As it was informed, Autodesk and Microsoft have let out the joint statement on the strategic union for the purpose of integration DWF into Microsoft applications. It is supposed to provide also possibilities of search and information loading in format DWF (for example, plans of the ground areas or specifications of industrial products) through the Internet. All it creates preconditions that DWF, beginning as the format for viewing of CAD-models, became the most widespread standard for designing data exchange.

Let's show that DWF – the best format of files for the publication of the design information.

Such processes as building and infrastructure creation, designing and manufacture of products in essential degree are based on information interchange. All stages of life cycle of a building, a product or infrastructure elements – from a birth of a plan and the sketch before working out and project support – mean work varying on a line-up of designers, engineers, developers, clients and contractors. Even occurrence based on Internet possibilities collaborative tools which allow to operate easier scale projects, does not change the collective nature of efforts of the group working over the project.

As have shown recent researches, on each of developers it is necessary on the average ten consumers of the information on the project – as inside, and out of the enterprise. Distribution of the design information between members of team and the feedback organisation long time were the basic articles of expenses at building building, creation of an infrastructure and working out of projects. The Internet, e-mail and collaborative tools of conducting the project have brought considerable progress in this area and have allowed architects, to cartographers and engineers to transfer CAD-given to other developers almost instantly in any point of the world. Nevertheless, though physical barriers in communications maintenance between professional designers also have been successfully overcome, but possibilities safely, effectively and precisely to hand over the design information to the colleagues, clients and the partners which are not professional designers, at developers has not increased.

Expenses for work with “papers” every year add millions dollars to expenses at performance of the various projects connected with building of buildings, creation of an infrastructure and manufacture. Delays at distribution of the design data, complexity of informing of set of the workers disseminated in various places about an actual condition of the project, impossibility of a feedback, often lead to expensive errors. Thus arise also additional expenses for creation of paper copies and delivery of the unpacked projects, quite commensurable with the first.

Replacement “paper” designing on electronic, with use CAD – and GIS-programs, involves new calls – both in sense of technology of process of designing, and in sense of a parity of an expense/time. It is inexpedient for all those professionals who are involved in process, but are not designers and users of CAD-systems, to get, study and apply difficult design appendices, such, as AutoCAD, Autodesk Inventor, Autodesk Map 3D or Autodesk Revit. Relation to the second criterion it is necessary to notice that though it is possible to unpack and dispatch paper plans to all participants of a design command dispersed in different places, this process demands time, is inefficient to trace it difficult also.

Moreover, any entering information or the change made in the unpacked project should be sent back to the designer who then should collect this information together, to co-ordinate various versions and to make the decision. Errors often appear when marks to documents are lost. If to consider a traditional cycle “listing on a paper – dispatch – entering of marks – return – updating – listing” from positions of expenses of time on a complete revolution it is required not less than four days.

Alternative method which has got popularity among designers last years – reproduction of paper process in the electronic form, using files TIFF, JPEG, CALS, HPGL and PDF. A lack of these “electronic paper formats” consists that they do not contain the information on designing and do not allow solve expensive problems of tracing of changes, document circulation and accountability automation. Besides, these formats can represent difficult 3D-models only in the form of 2D-images, therefore they cannot serve as an effective remedy for sharing of the design information.

New standard DWF combines conveniences “an electronic paper format” with rich possibilities of viewing and tracing of the information, drawing up of inquiries, the press, document circulation and safety automation that is necessary for designers. Format DWF (Design Web Format) has been specially developed Autodesk as Wednesday for gathering and safe distribution of the design data everywhere where it is necessary, and it is intended both for professionals in the field of designing, and for nonprofessionals. From the very beginning format DWF was the open standard. Any developer could receive specifications and technology for an applications programming with use of format DWF.

Opened, compact and reliable, format DWF does possible effective distribution considerable on volume of the design data among all for whom it is necessary. It provides integrity of the data of the project and provides possibilities of the exact publication, visual display and the press even very difficult 3D-projects and models. Actually, unlike the formats focused on paper listing, DWF can transfer all design plan put in original CAD-model. Thus, the addressee will see that the author means in accuracy. As this format approaches for viewing, the press and placing on web-page, DWF has essential advantages in comparison with the traditional paper document.

Using DWF-files instead of paper data carriers, the companies can reduce and even to reduce on a zero many expenses connected with an exchange and sharing of the design data. Express and post services concern them; a payment of the workers necessary for maintenance of listing, the organisation, sorting and storage of the big sets of documents; expenses for materials (a paper, ink and so forth). It is even more important that DWF-format helps to reduce expenses of time for management of processes of creation of the project and its subsequent reviewing.

Let's consider the basic properties DWF:
- Format DWF allows to keep the data with high reliability, accuracy and the permission to 60 million dpi.
- DWF is well scaled format ready for printing which supports multiple pages, protection by passwords and can contain properties of objects (properties).
- In DWF-files high degree of compression of the information is used. As consequence, considerable models on volume can quickly be transferred by e-mail or through service Autodesk Buzzsaw, and then be looked through by means of Autodesk DWF Viewer – the small appendix which can be loaded free of charge from company Autodesk site. It is a simple and convenient way of sharing of the design data.
- Users of various appendices for the designing, offered by company Autodesk (including AutoCAD, Autodesk Inventor, Autodesk Revit, Autodesk Map 3D), can create one pressing of a key of a mouse DWF-files, without bringing in a victim integrity of the project or possibility of its listing. Is much easier and faster to create multisheet drawings, plans or models in one DWF-file containing all sheets, than to create a multiple pages PDF-file on one sheet.
- Possibility of the publication of DWF-files is integrated into appendices Autodesk, therefore there is no necessity to use any other programs. Moreover, by means of free program Autodesk DWF Writer everyone can create DWF-files from any working under Windows appendices for designing, simply having chosen in dropping out menu Printer Name a line Autodesk DWF Writer. Program DWF Writer gives the chance to create DWF-files to users of such CAD-systems, as Bentley MicroStation, SolidWorks and Pro/ENGINEER, not having the built in possibility of the publication in format DWF.
- Format DWF supports viewing, listing, measurement and creation of marks in 3D-models exported to a DWF-file practically from any package for designing of company Autodesk.
- Format DWF supports sets of multisheet drawings, therefore the designer has a possibility for one step to create in one DWF-file a full set of documents and drawings for the difficult project.
- Using possibilities DWF, the designer can make accessible to addressees only those given (layers, kinds etc.) which he wishes to show.
- Files DWF are reliable and help to protect intellectual property. DWF-files include only that information which the designer considers it necessary to extend. By default in a DWF-file the same accuracy of reproduction of the information, as well as in the paper drawing is established. If necessary the author can increase the permission according to requirements of the addressee. The information on layers can be included or switched off. Properties of objects or attributes do not join until it will not be directly specified by the user of CAD-system. Protection by means of the password and DWF-file enciphering provide information safety.
- Files DWF are ideally suited for use in archives as in essence they are electronic drawings. Thanks to the compact sizes, DWF-files take less places on a file-server, than CAD-files (for example, in format DWG), not to mention cases with numerous paper copies of drawings.
- Besides a drawing, DWF-files can contain and other information from original CAD-model, including scales of drawings, exact co-ordinates, various kinds, hyperlinks and the properties of object which are based on XML. Thanks to it, the user can receive the various information on object – for example, to look the sizes of a door or mark of the used materials.
- Free package Autodesk DWF Toolkit gives the chance to developers of a software to create applications which can write down and read out multisheet DWF-drawings. Such functionality is supported already many vendors, and format DWF becomes the open industrial standard for professionals in the field of designing.

When it is necessary for participants of the project to enter the new data, they can take advantage for this purpose of package Autodesk DWF Composer. This product includes a full set of means for reviewing, allows to bring in DWF-files comments and ideas, without changing the initial data. Functions of viewing, measurement and entering of the marks, realised in package DWF Composer, allow to work both with 2D – and with 3D-geometry. It simplifies collective work on the project and its transfer from one product of family Autodesk in another (including package Autodesk Revit Building). There is no necessity to study that system of designing, in which the initial file has been made while to master package DWF Composer easily and quickly everyone can – from the project head and the leading expert to the simple engineer and the supplier.

Those members of team it is necessary for them to look through or unpack only DWF-files, can use Autodesk DWF Viewer – the free supplement which provides the same accuracy of visual reproduction and listing, as well as more advanced appendices Autodesk intended for designing. DWF Viewer is the high-efficiency and reliable product providing sharing 2D and 3D-drawings, plans and models. Thus, unlike alternative programs (such as Adobe Acrobat or SolidWorks eDrawings), it has the smaller volume, works faster, and also that is important, is free. Possibility of exact reproduction of all volume of figures of the project in the form of format DWF compact, opened, safe and ready to transfer – in a combination to programs Autodesk DWF Viewer and DWF Composer is an ideal decision for sharing of the design information.

Let's reduce properties and possibilities of formats of files DWF and PDF in the table.

Appointment Design Web Format – the open, reliable format developed specially for an exchange by volume sets of the engineering data Portable Document Format – the universal format developed for an exchange by text documents
The basic function Gives possibility to the members of team who are not using CAD-systems, to look through sketches and drawings in the digital form (projects of buildings and constructions, the geodetic information, design of products) Provides integrity and inviolability of the document, allows to simplify document circulation
Possibility of the publication from AutoCAD It is supported. Creation of DWF-files is the built in function of appendices for designing of company Autodesk, such, as AutoCAD and the programs constructed on its base (Autodesk Inventor, Autodesk MapGuide and Autodesk Revit). Users can “to publish” a volume set the design mice given by one click It is supported only in the event that the user will get package Adobe Acrobat Professional. All functions are accessible not. Adobe Acrobat is “the printer driver” and it is not intended to present the design data in full
Scalability of the design data It is supported. A format ready for printing with flexible possibilities and with high degree of compression of the information. Allows to store difficult documents on structure and the information on the project (intelligence) It is not supported. The limited possibilities of compression of the data. The architecture of a format is not intended for preservation of the big data sets or the information on the project
Multisheet sets of drawings Are supported. Users can automatically publish multisheet sets of the drawings which source are some DWG-files in one DWF-file. DWF keeps also design co-ordinates and properties of sheet Are supported, but with essential more time of the publication and consumption of resources, than DWF
3D-models DWF supports 3D-models published by almost any appendix for designing of company Autodesk. It is supported only U3D – a technology format with the limited application in CAD/CAM-branch
Inclusion of the information on the project (Design Intelligence) It is supported. DWF-files are more than electronic drawings. They can contain the data about sheets, objects, components, mass characteristics, and also electronic marks It is not supported
Optimum compression of files with drawings It is supported It is not supported. PDF-files frequently three times it is more on volume that reduces throughput, loads resources of system and leads to increase in times of time of the publication and viewing
Open access, expansion possibility It is supported. Free package DWF Toolkit gives the chance to develop own applications which read and write down multisheet DWF – drawings. Besides, API free package Autodesk DWF Viewer allows end users to insert DWF-drawings in HTML and office applications, and to developers of a software – to arrange a viewer for use in appendices of foreign manufacturers It is supported, but developers should get the licence for libraries for creation PDF
Protection of the information on layers It is available. Those layers which have been set by the author in AutoCAD. For security reasons, information about the layers will not be published without the express instructions of the author. There is, but only if they acquire an additional package Acrobat Professional The tool for a choice of layers is separated from kinds AutoCAD that can lead to infringement of standards. The information on layers is published by default. All it can serve as the reason of critical situations and losses of information safety.
The printing in scale It is supported at printing as 2D – and 3D-drawings, schemes and models It is supported (with some reservations for plotters the big format)
The kinds based on AutoCAD Are supported Are supported by a format, but cannot be exported package Acrobat Professional
Support Xref Yes Yes
Hypertext references (hyperlinks) Are supported. Communications are automatically created at a conclusion of a file with use of software products of families AutoCAD and Revit Are supported by a format, but cannot be exported package Acrobat Professional
Editorial editings or comments Are supported at acquisition DWF composer Are supported at acquisition Acrobat Professional
Protection against copying Is not present Is, but it is possible to find tools in the Internet for breaking of this protection
Protection by means of the password Yes Yes, but it is possible to find tools in the Internet for breaking, especially for earlier versions PDF
The raster drawing It is supported It is supported
The vector drawing It is supported It is supported

Let's consider, that specialisation, i.e. advantages DWF over PDF gives.

Designers and managers of projects even more often abandon to the idea that use in the course of designing of paper plans and services in delivery for reception of the information from members of team manages the expensive, and also causes considerable losses of time. As many design commands already have now access to collaborative to sites or communicate with the help of E-mail and through the Internet with the majority of architects, engineers, suppliers and manufacturers it is possible to communicate when necessary and where they were. The question now consists in how to provide each of them with necessary materials under the project, and in such format which would allow them to see and understand a true plan of the designer.

Use of the original design DWG-files created in AutoCAD, can appear inconvenient for a number of reasons. For example, in case of file transfer to format DWG it is difficult to exclude possibility of entering into the project of unapproved changes and to protect intellectual property of the developer as any person having AutoCAD, can make to the project of change or simply steal a design. Besides, cost of acquisition and installation of the corresponding software, and also an expense for training of all members of team to work with difficult CAD – and GIS-appendices will be high enough. Thus, for the majority of the users who are engaged in building, working out of products or cartography, the real choice of a standard format for teamwork over the project and managements of a course of its performance is limited to two formats: DWF or PDF. Further we will consider properties and possibilities of each of these formats.

If to compare format DWF to format PDF it is possible to find some similarity. Both formats allow to create independent files, support documents with difficult structure, carry out functions of the press and protection of the information by means of the password, and also provide support of a raster and vector drawing. If to get software package Adobe Acrobat Professional users can publish files from AutoCAD, keeping thus the information on layers, and to insert comments – the same as and in a case with DWF.

However, PDF concedes in comparison with DWF on variety of the key possibilities necessary in the field of designing. Format PDF was created for an exchange of text documents whereas DWF has been specially developed for distribution considerable on volume of the design data and consequently it approaches for engineers is better.

Format DWF provides following possibilities:

Reliability, accuracy and completeness of the data. Format DWF supports measurements in real 3D-coordinates and “understands” that the world around is three-dimensional, instead of flat. DWF-files can be created with ready more a split-hair accuracy, than PDF-files that is necessary for exact representation and measurements in engineering projects.

Productivity and scalability. Files in format DWF, as a rule, on the size there are less than PDF-files. At project preservation in format DWF the average size of a file usually makes from one tenth to 1/3 sizes of a corresponding file in format PDF. High indicators of compression of the information provide many advantages. So, DWF-files are much fast sent by e-mail and on a local computer network. In comparison with PDF-files, they demand much less a place for storage that reduces expenses and reduces requirement for disk space. In addition, the technology of viewing of DWF-files allows to visualise faster the big model, and also gives the chance to manipulate the big data sets in real time thanks to technology spatial indexing that is not present in format PDF.

Document circulation automation. Format DWF supports advanced possibilities of creation of electronic marks, measurements and the document circulation automation, not accessible in PDF.

Support 3D-graphics. DWF supports possibilities 3D-graphics which help to transfer and perceive better the design plans put in engineering models, including structure of models and assemblages, and also properties of components. Users of appendices of 3D-designing of company Autodesk (including Autodesk Inventor, AutoCAD, Autodesk Architectural Desktop and Autodesk Building Systems) can work in common with DWF-files within the limits of a design command, using at the publication of possibility 3D-graphics put in format DWF.

Let's consider, how DWF meets half-way requirements of a command of designers.

Obviously, format DWF has obvious advantages over format PDF. Actually PDF concedes on those parametres which are most important for exact transfer of volume sets of the design information: on accuracy of representation on the screen and at the press, by possibilities of compression of the data and their scalability, and also on “intellectuality” including – at work with 3D. Without these key functions the PDF-format is not an optimum choice for designers and is not capable to support all possibilities of CAD-appendices. In case of creation of the big projects the PDF-format does not give to a command of designers all necessary possibilities for teamwork with the design information.

On the other hand, format DWF is developed to satisfy specially special requirements and inquiries of professionals in the field of designing and to promote teamwork with the design information. Being evolutionary improvement of existing process, DWF does not demand from users of the big technical experience and investments into new appendices for the publication. Moreover, supporting the information on model, properties of object, automatic hyperlinks and other additional information which displays all depth and complexity of the CAD-project, DWF gives the chance to all members of team to understand a plan of the designer.

Let's list the following clear advantages DWF over PDF:
- Functionality DWF allows the people, directly not engaged designing, to look through with necessary accuracy and completeness all results of work of the designer, including 3D-models.
- Files in format DWF cannot be edited, therefore the format allows to protect intellectual property of the designer. Besides, each user will see that the designer has planned.
- More sated design data raises level of the information and the knowledge used by a command of developers, improves decision-making process.
- More compact on volume DWF-files allow to raise productivity and an overall performance as their transfer and loading is carried out faster. Functions of panoraming, scalings and the press in appendices also work faster.
- The general expenses at use of DWF-files it is less at least for two reasons:
     – DWF-files can be created by means of appendices for company Autodesk publication while creation of PDF-files from AutoCAD or other CAD-appendices demands additional acquisition Adobe Acrobat Professional;
     – smaller DWF-files in the sizes load system less, demand smaller throughput of communications and smaller resources for storage that as a result leads to reduction of expenses.

Let's compare browsers of files – Autodesk DWF Viewer and Adobe Reader.

As the DWF-format has many advantages in comparison with PDF, and program Autodesk DWF Viewer gives more possibilities for a command of developers in comparison c Adobe Reader. Both these programs are the simple free supplements, allowing to look through and unpack corresponding formats. But on it similarity comes to an end. Autodesk DWF Viewer uses the same “cursors” for the press and visualisation, as products for company Autodesk designing. Moreover, by means of DWF Viewer users can easily choose the size of a paper, and also visually see chosen for print of sheet or a kind before the DWF-file will be sent on the printer. DWF Viewer provides accuracy of reproduction of projects and drawings both at visualisation, and at the press, gives tools for navigation, and also gives the chance to print materials of the project both in original, and in the set scale. To the users using for the large-format press of the device of companies HP or Oce to print a file from DWF Viewer as it is simple how to press a key of a mouse.

At use Adobe Reader of business are a little differently. In spite of the fact that for users AutoCAD to create and extend PDF-files rather simply, many details of an original file after the publication in the form of a PDF-file with the subsequent viewing in Adobe Reader will be lost. On the other hand, Autodesk DWF Viewer provides simple access to information-sated 2D – and 3D – to the project data to all for whom it is necessary. By means of DWF Viewer it is possible to look through the difficult information of design files, including the detailed information on each sheet within a DWF-file, and also to get access to the properties of object published from such appendices, as Autodesk Architectural Desktop and Autodesk Map 3D. Besides, Autodesk DWF Viewer supports viewing of attributes of the blocks defined by the user which are published from products of family AutoCAD 2006. Better to say, depth and an information detail, important and necessary for exact machine-building and architectural designing, cannot be provided by means of Adobe Reader.

Let's compare appendices for reviewing of files – Autodesk DWF Composer and Adobe Acrobat Professional.

We have compared functions of viewing and the press of files. Similar results turn out and at comparison of appendices for reviewing of files of companies Autodesk and Adobe – Autodesk DWF Composer and Acrobat Professional. Created for acceleration of process of reviewing of documents, Acrobat Professional and DWF Composer offer similar tools for entering of editorial editings, movings on sheet and scalings. But Acrobat Professional has been created as a general application for heads of the enterprises, representatives of creative trades and administrative personnel in the most various industries. In essence, it is a question not only of a lack of key functions of plotting and visual reproduction which are available in DWF Composer and DWF Viewer, but also about a lack of the specialised functions necessary for effective teamwork in building, cartography and mechanical engineering.

In package Autodesk DWF Composer processes of reviewing and entering of marks are essentially improved in comparison with Acrobat Professional. Users can bring “clever” marks (smart markups), using for this purpose such means which give the chance to adhere these marks to objects being under them that further accelerates and simplifies viewing. Except convenient and clear tools for creation of portable contours (shapes), the text, marks, the basic inscriptions, and also drawings of drawings or comments by hand, in library of marks (markup library) are available means for addition of the symbols created by the user. It opens ample opportunities for drawing up of summaries and entering of marks. New tools for creation of symbols allow to generate the own catalogue of symbols from any sources, including from blocks of the objects created in AutoCAD of 2006, any DWF-files and raster images.

It is even more important that the project, after entering into it of marks by means of DWF Composer, it is possible to return back in software products of families AutoCAD and Revit. Frequently it allows to refuse project listing in full and accelerates reviewing process even more. DWF Composer provides the same possibilities for viewing of projects, as well as those appendices in which these projects have been developed, including dynamic moving on sheet, scaling and 3D-rotation. All members of team of developers always can be completely assured of accuracy as it is possible to see any quantity of signs after a comma and to set any accuracy of measurement.

DWF Composer supports advanced functions for formation of a set of sheets and the automated document circulation, giving to users of possibility for the control over process of the reviewing spent by all command. Editorial editings and marks remain in a DWF-file together with the detailed information which includes data on the author, the status, history and the made remarks for each summary. To define the best way of updating of the initial project, the designer can look through these marks directly in software products of families AutoCAD or Autodesk Revit. Package DWF Composer, also as well as DWF Viewer, gives to users simple means for a choice of the sizes of a paper and provides preliminary viewing of the sheets chosen for the press or kinds before sending them on the printer.

Let's reduce the basic distinctions of browsers and reviewing of files in the table.

In the table some of the basic distinctions between free viewer Autodesk DWF Viewer, programs Autodesk DWF Composer and Adobe Acrobat Professional 7 are presented. The tick means that function is optimised for designers-professionals, the asterisk – function is supported, but not optimised.

Viewer 6
Composer 2
Professional 7
Viewing of files
Viewing of 3D-models
Simple navigation on sheets (the list, a table of contents, bookmarks) and on model
Transition between sheets and kinds by means of hyperlinks
Moving on sheet, scaling and rotation in a mode of real time
Access to “intellectual” project data (to properties of object and sheet)  
The press with accuracy AutoCAD
Viewing and navigation of DWF-marks  
Measurements taking into account scale  
Marks with use “clever” portable contours (smart shapes)  
Instant fixing of the maintenance concerning the project for marks (snapshot tool)  
The tool of work with the text  
Addition of portable contours (a line, a polyline, rectangles, ellipses)  
Drawings or the inscriptions made by hand (freehand tool)  
The binding to geometry  
The publication of DWF-files from DWG-files    
Repeated preservation of DWF-files with marks, editorial editings and summaries    
Addition of the symbols created by the user  
Creation of sets of drawings  
Addition and removal of sheets, change of an order and renaming of sheets  
Indication of the status of marks  
The automatic recording of a name of the reviewer and date/time  
Addition of comments to already inserted marks    
Full integration with the products based on AutoCAD (import of marks, navigation, the switch on/off, the repeated publication of DWF-files)    
Full integration with products Autodesk Revit Building and Autodesk Revit Structure (import of marks, navigation, the switch on/off, the repeated publication of DWF-files)    
Full integration with service of the automated document circulation and tracing of process of reviewing of project Autodesk Buzzsaw    
Support of different formats
Multisheet DWF-files Are supported
3D DWF-files from software products AutoCAD, Autodesk Inventor, Revit, Architectural Desktop, Autodesk VIZ, 3ds max Are supported
Raster images  
DWG-files (viewing, plotting and the publication in format DWF by means of Autodesk DWG Viewer)    
DXF-files (viewing, plotting and the publication in format DWF by means of Autodesk DWG Viewer)    
Files Autodesk Inventor in formats IPT, IAM and IDW (by means of Autodesk Inventor View)    
The price, USD free 199 449

Let's consider use cost.

As sets of decisions Autodesk and Adobe have many similar properties (for example, free browsers which can be loaded from a site of developers are offered), at first sight can seem that the big difference in possibilities given by them is not present. More close examination shows essential distinctions.

First, it concerns files. As already it was marked above, PDF-files and the DWF-files created from the same design file, will differ considerably on the size: DWF-files on the average on third it is less, than PDF. If to consider that the project of the big construction contains an order of 150 000 documents application of PDF-files, most likely, will cause in increase in capacity of storehouses of the information and throughput of communication channels, and also in additional system resources that as a result will inevitably lead to growth of expenses.

Secondly, the publication in format DWF is natural property for all CAD-systems of company Autodesk. Those who works with other appendices, can use free program Autodesk DWF Writer which can be loaded from a site At the same time to the users, wishing to create PDF-files in appendices Autodesk for the publication, it is necessary to get Adobe Acrobat Professional. It is necessary to notice that DWF Composer, as the tool for reviewing, much more cheaply, than Acrobat Professional. Besides, DWF Composer it is completely integrated with products of families AutoCAD and Autodesk Revit.

It is in summary important to underline that company Autodesk gives completely opened specification and technology. It gives the chance to users to develop applications for reading, records, creations, viewing, inquiry and the press of DWF-files. Company Autodesk has incurred the obligation to make tools for an applications programming accessible to customers and partners.

1. Cohn D. More potential DWF//CAD/CAM/CAE Observer #1 (25), 2005 []
2. DWF – a format for the publication of the design data from Autodesk. A part I//CAD/CAM/CAE Observer #4 (22), 2005 []
3. DWF – a format for the publication of the design data from Autodesk. A part II//CAD/CAM/CAE Observer #5 (23), 2005 []

The author: Челябэнергопроект
Date: 07//22/2009

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