| Subject | English | Thesaurus |
| IT, abbr. | Information Presentation Facility Compiler | IPFC (IBM, OS/2) |
| abbr., file.ext. | Information Presentation Facility Compiler | IPFC (IBM) |
| abbr. | Inosov S.V., compiler of this dictionary | Vosoni (Vosoni) |
| softw., abbr. | Process Algebra Compiler | PAC |
| softw., abbr. | Text Game Compiler | TGC |