see "IsMSDOS()     --> " + ismsdos()     + nl
see "IsWindows()   --> " + iswindows()   + nl
see "IsWindows64() --> " + iswindows64() + nl
see "IsUnix()      --> " + isunix()      + nl
see "IsMacOSX()    --> " + ismacosx()    + nl
see "IsLinux()     --> " + islinux()     + nl
see "IsFreeBSD()   --> " + isfreebsd()   + nl
see "IsAndroid()   --> " + isandroid()   + nl
