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| Subject | English | Thesaurus |
| abbr., IT | CD-ROM/Extended Architecture | CD-ROM/XA |
| abbr. | extended architecture ready CD-ROM | extended architecture ready compact disk read-only memory (ssn) |
| comp. | extended architecture ready CD-ROM | XA-ready CD-ROM (ssn) |
| busin., abbr. | Extended Data Services | EDS |
| abbr., file.ext. | Extended Messaging Services Application Programming Interface | EMSAPI |
| IT, abbr. | Extended Services | ES (OS/2) |
| abbr., file.ext. | Extended Services Communications Manager | ESCM (IBM) |