still used as part of OS/2's latest incarnation, ArcaOS. It is otherwise rarely used, although there are several tools that can read or write IPF files. HTMIPF: Converts HTML to IPF HyperMake: Multi-format documentation generator IPF Editor: Commercial IPF editor UDO: Open source multi-format documentation generator VyperHelp: Open source IPF editor and converter Free Pascal's documentation generator (fpdoc), can also generate OS/2's IPF output. Help Viewers The original OS/2 VIEW.EXE application NewView v2.x. This is an open source project and code is available from Netlabs. Free Pascal's text base IDE has support for various help formats - OS/2's INF format being one of them. The fpGUI Toolkit project also has an INF viewer called DocView. It is an open source project and was originally a port of NewView v2.x, but has since seen some different designs and changes. INF is also the official help file format of fpGUI Toolkit. External links INF file format PM123man.INF - PM123 User's Manual version 0.99 (Source File Distribution, 298 KB) Markup languages OS/2 Online help