DEBUG

DEBUG("ON");
DEBUG("OFF");
DEBUG("SIMPLE");
DEBUG("ALL");
DEBUG("FOLLOW");
DEBUG("FOLLOW2");

Enables or disables debug mode.
In "FOLLOW" mode, the @functions @DebugFollowFun and @DebugFollowVar are taken into account.
The "FOLLOW2" mode is like "FOLLOW", but without keyword output.

see
@DebugFollowFun
@DebugFollowVar