Hmake.exe is the Hypermake commandline compiler to compile RTF and HTML files from the WS file format and gets executed by WSformat, "Make - RTF/HTML". Hmake.exe requires EMX.

EMX can be downloaded from ftp://ftp-os2.nmsu.edu/pub/os2/dev/emx/v0.9d

kbdvio32.dll is no more necessary.