For compilation, fix build.conf to suit your system. (There are 3 versions of build.conf for OS/2, Linux and Windows in the root directory. Also developer-specific config exists with names like build-valerius.conf, build-prokushev.conf, etc). OpenWatcom compiler is used for development. I tried OpenWatcom versions 1.3 as well as 1.5. Also, for *.cmd scripts a REXX language interpreter is needed. For Linux and Windows users Regina REXX (http://regina-rexx.sourceforge.net/) may be used. Before compilation, for setting environment variables, use setvars{.cmd – for OS/2, .bat – for Windows, and .sh – for Linux}.