What's the difference between %TMP% and %TEMP% in Vista environment variables?

Question

On my computer, the environment variables %TMP% and %TEMP% both point to the same location.

Are those for backward compatibility issues only, or is there a real dif

Answer 1

To complete the other answers:

Environment variable

in MS-DOS 5 (1991-1994) %TEMP% sometimes pointed to C:\DOS so removing all files in %TEMP% would cause great problems to say the least.