Except that DOS was made to have its first programs ported from CP/M, so it’s relevant to explain that there were no environment variables to inherit from CP/M and no developer habits or program standards to inherit from CP/M programs.
Which is irrelevant to TMP or TEMP.
It could simply be: When envars were added to MSDOS…
Which is irrelevant to TMP or TEMP.
It could simply be: When envars were added to MSDOS…