The REDUCE installer does not add the REDUCE executable folder to your
path, so by default you can run REDUCE only via absolute pathnames,
which is what the shortcuts added to the Start menu do.
Therefore, REDUCE Run mode also uses absolute pathnames if it can find
them, which it does by looking for the installation directory
\Program Files\Reduce\ in all local drives (drive letters
C: to Z:).
The default configuration runs REDUCE directly rather than via the
.bat files, which avoids the query Terminate batch job
(Y/N)? when REDUCE is killed (such as by attempting to interrupt it).
Temporarily, the .bat commands remain available for comparison.
Note that it is necessary to use the argument -nocd with the
CSL REDUCE command redcsl.bat to preserve the current working
directory.