Intergraph Standard File Formats (ISFF) are the file formats common to

MicroStation MicroStation is a CAD software platform for two- and three-dimensional design and drafting, developed and sold by Bentley Systems and used in the architectural and engineering industries. It generates 2D/3D vector graphics objects and elements ...

and

Intergraph Intergraph Corporation was an American software development and services company, which now forms part of Hexagon AB. It provides enterprise engineering and geospatially powered software to businesses, governments, and organizations around the w ...

's Interactive Graphics Design System (IGDS). ISFF is made available to the public, so that third-party developers could create applications for MicroStation that read and write ISFF format without a license from Intergraph. *Design files, or DGN files (*.dgn) are

binary file A binary file is a computer file that is not a text file. The term "binary file" is often used as a term meaning "non-text file". Many binary file formats contain parts that can be interpreted as text; for example, some computer document files ...

s with variable-length records for graphic elements, and non-graphic data. *Cell library files (*.cel) are binary files that store cell definitions for placement in design files. MicroStation versions 8 and newer support the V8 DGN file format, but which has a different internal data structure than the ISFF-based DGN. In cases where there is potential for confusion, ISFF-based DGN may be called Intergraph DGN, or V7 DGN. Autodesk has chosen not to support DGN in

AutoCAD AutoCAD is a 2D and 3D computer-aided design (CAD) software application developed by Autodesk. It was first released in December 1982 for the CP/M and IBM PC platforms as a desktop app running on microcomputers with internal graphics control ...

2006, although it does support the format in its Map3D, Land Desktop, and Civil3D products.

References

External links

* CAD file formats {{CAD-software-stub