Description from the author:
"RXCLS is a shareware program which compiles a REXX programs into a stand alone executable. RXCLS is a 32bit program designed to run on OS/2* version 2.x or greater."
Well, the author did not say all: RXCLS does NOT compile REXX programs into machine readable code like other compilers. The only thing it does is: Create the token image of the REXX program and bind it with a little stub together to an EXE file. If called, the stub of the EXE calls the REXX interpreter to execute the included token image.
To verify this you may set the environment variable TRACE to ON and call an EXE 'compiled' by RXCLS.
But nevertheless RXCLS is fine done and useful if you want to hide your REXX source code. And this method does not have any compatibility problems through converting the REXX code, of course.
The advantage of the method used by RXCLS compared to my free REXX "compiler" REXXCC: It avoids the 64 K limit and you don't have problems with the EAs.
see also Rexx/Wrapper, REXXCC - a REXX "compiler" and REXX2EXE a REXX "compiler"