DOS 3.3 and above
Used by APPEND
Stores a copy of the appended directory list if APPEND /E is used.
DOS 2.0 and above
Used by COMMAND.COM
Specifies the location of COMMAND.COM which is used to reload the transient portion.
DOS 6.0 and above
Used by startup menu processing
Specifies the selected menu blockname.
DOS 6.2 and above
Used by COPY, MOVE and XCOPY
Used to preset the /Y switch for COPY, MOVE and XCOPY commands. If preset /-Y may be to used to override this.
DOS 5.0 and above
Used by DIR
Used to preset default switches for the DIR command.
PC DOS 6.3 and above
Used by CHKDSK, DIR, FORMAT and MEM
Used to remove the numeric separators from output.
DOS 2.0 and above
Used by COMMAND.COM
Specifies the search path for executable files. Many other programs also use PATH.
DOS 2.0 and above
Used by COMMAND.COM
Specifies the command prompt. If this is not set then the default is $N$G except for PC DOS 7 where the default is $P$G.
DOS 5.0 and above
Used by COMMAND.COM
Specifies a temporary directory for piped output. Many other programs use TEMP for temporary files though some programs use TMP instead.