In "Drawings in SVG format. Part 4 - Draft Standard" is an example of drawing dimensions. In the continuation we consider the use of JavaScript and compare the drawing files in different formats.

Wikipedia's open and see what they write about formats .DXF and .DWG and their development.

DXF - open file format for the exchange of information between the graphical CAD applications. Was first introduced in December 1982 as part of AutoCAD 1.0, as a data exchange format that provides the same information as the enclosed format AutoCAD - DWG, specification of which have never enjoyed.

In "Drawings in SVG format. Part 2 - Draft Standard" an example of drawing simple graphics from CAD systems. In the continuation we consider drawing hatching for different materials.

On the Internet you can find a lot of different information about creating drawings in the format SVG. More often invited some editor and export of DXF format to SVG. Looking through the code SVG immediately obvious that there is a lot of excess. Created in a file editor, SVG may not always correctly revealed in the other. One happy that browsers started to support the SVG format. Everywhere they write about the disadvantages of using SVG. Perhaps it is necessary to adhere to common rules of the file to display the drawings?