Description

   TEST/MAPPING may be used to test the behavior of a mapping table
   in the mapping file. The result of mapping an input string
   will be output along with information about any metacharacters
   specified in the output string.

   If an input string is supplied on the command line, then only the
   result of mapping that input string will be output. If no input
   string is specified TEST/MAPPING will enter a loop, prompting
   for an input string, mapping that string, and prompting again
   for another input string. TEST/MAPPING will exit when a CTRL/Z is
   entered.