System variable
maxima_tempdir
maxima_tempdir
names the directory in which Maxima creates some temporary files.
In particular, temporary files for plotting are created in maxima_tempdir
.
The initial value of maxima_tempdir
is the user's home directory,
if Maxima can locate it; otherwise Maxima makes a guess about a suitable directory.
maxima_tempdir
may be assigned a string which names a directory.