MX_SHELLEX enhancement: new optional parameter exitstatus returns the exit code of the launched process. It only applies when waitflag=1.
xcall MIAMEX, MX_SHELLEX, status, objectspec {,action, parms, dir, showflags, waitflag, clisvr, exitstatus}
where
exitstatus (signed Num) [out]
returns the exit status of the launched process
