The EXEC tag will call a specified DOS batchfile with a file as argument. The
batchfile itself will use this argument and return with an errorcode whether the
operation was successful or not. You may also specify a path as last argument. If
no path is defined, the batchfile and the textfile will be stored shortly in the
default temp directory.Both files will be deleted after finishing the compilation.
If no exception occurres, PReP will carry out the next argument ("success") or it
will go to the "no success" instructions.
The output text of the batch file is stored in a tag named EXEC_MESSAGE.