imsimta test -mapping tests 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 meta characters 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, imsimta test -mapping will enter a loop, prompting for an input string, mapping that string, and prompting again for another input string. imsimta test -mapping will exit when a CTRL-D is entered.