Composing Names in TSP

Every name must begin with a letter, _ # % or @ (exceptions: 2SLS and 3SLS commands).

Subsequent characters in a name may be letters, _ # % @, or digits.

# or % may not be used in names that appear in MATRIX commands.

The maximum number of characters permitted in a name is 64 (in versions prior to TSP 4.4 it was 8).