The argument is matched against all commands and their short descriptions, and matching examples are displayed. Matching is not case-sensitive.

Example: \begin{verbatim} >> HELP trace (Print help for commands whose name or description match the string)

6 commands matching "trace":

GENERATE_TRACE_OFF (Switch off generation tracing (default)) GENERATE_TRACE_ON (Switch on generation tracing) INTERLINGUA_TRACE_OFF (Switch off interlingua tracing (default)) INTERLINGUA_TRACE_ON (Switch on interlingua tracing) TRANSLATE_TRACE_OFF (Switch off translation tracing (default)) TRANSLATE_TRACE_ON (Switch on translation tracing) \end{verbatim}