Intergraph Standard File Formats

Intergraph Standard File Formats (ISFF) are the file formats common to MicroStation and Intergraph'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 files 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 2006, although it does support the format in its Map3D, Land Desktop, and Civil3D products.

Famous quotes containing the words standard and/or file:

    I don’t have any problem with a reporter or a news person who says the President is uninformed on this issue or that issue. I don’t think any of us would challenge that. I do have a problem with the singular focus on this, as if that’s the only standard by which we ought to judge a president. What we learned in the last administration was how little having an encyclopedic grasp of all the facts has to do with governing.
    David R. Gergen (b. 1942)

    A common and natural result of an undue respect for law is, that you may see a file of soldiers, colonel, captain, corporal, privates, powder-monkeys, and all, marching in admirable order over hill and dale to the wars, against their wills, ay, against their common sense and consciences, which makes it very steep marching indeed, and produces a palpitation of the heart.
    Henry David Thoreau (1817–1862)