:TRACE

Purpose

Sets the trace level, controlling debugging output.

level: :SILENT, :NORMAL, :VERBOSE, :DETAIL, :DEBUG, :STEP or :RUN
also :DEBUG-COMPILER-ON and :DEBUG-COMPILER-OFF

  (:TRACE :VERBOSE)
  (Color MyHouse ?what)
  (:TRACE :NORMAL)

Always succeeds.

Never fails.

:SILENT - print no extra output.
:NORMAL - Prints when a command succeeds or fails.
:VERBOSE - standard debugging level. Suitable for most debugging.
:DETAIL - More debugging detail.
:DEBUG - Prints the internal registers every reasoning step. You probably don't want to use this level.

:STEP - Puts the internal processor in Step mode so the user can step through the execution of the code.
:RUN - Takes the internal processor out of Step mode.

:DEBUG-COMPILER-ON - used for debugging the path compiler. Most people won't need to use this.
:DEBUG-COMPILER-OFF - used for debugging the path compiler. Most people won't need to use this.

When in Step mode, hit Enter to go one step forward, or enter a number to go that many steps forward, or type GO or RUN to exit step mode.