Compress WinHelp4 file (middle compression).
| Type & position: | command, preamble |
| Syntax: | !wh4_medium_compression |
| Description: | If you use this switch inside the preamble the Microsoft Helpcompiler will compress the Windows Help file by about 50%. The compression of the Windows Help file takes some time. |
| Exists since: | Release 6 Patchlevel 15 |
| See also: | !wh4_high_compression, !win_high_compression |