[Description] All but one of the debugger commands begin with one or more keywords. The exception is the examine command. The debugger recognizes the '{' and ';' lexemes that must precede a command, and uses those to reset to the LKEYWORD state for the beginning of the next command. [Lexical State] 
LKEYWORD
L B P T
L E X P O R T
L F I L E
L F I N T
L K E Y W O R D
L L I N E
L N O R M
L S E T E N V
L S I G N A L
L W O R D