File r38/lisp/csl/util/clash.bat from the latest check-in
REM Look for name-clashes in REDUCE if "x%1"=="x" (set srcdir=../cslbase) else set srcdir=%1 start /wait .\slowr38 -v -Dno_init_file %srcdir%/../util/clash.red -D@srcdir=%srcdir% -- log/clash.log