A number of command-line MAT applications make these common
||Print version number and exit.
||Enable debug output.
||Set the subprocess debug
level to the value provided, overriding the global setting.
0 disables, 1 shows some subprocess activity, 2 shows all
||Enable subprocess statistics
(memory/time), if the capability is available and it isn't
||Override the default system
location for temporary files. If the directory doesn't
exist, it will be created. Use this feature to control where
temporary files are created, for added security, or in
conjunction with --preserve_tempfiles, as a debugging aid.
||Preserve the temporary files
created, as a debugging aid.
||If specified, print to stderr the source of
each MAT configuration variable
the first time it's accessed.