code: def p_def_label(p):
      
      p[0] = None
      __DEBUG__("Declaring '%s%s' in %i" % (NAMESPACE, p[1], p.lineno(1)))
      MEMORY.declare_label(p[1], p.lineno(1), p[3])
docs: line : ID EQU expr NEWLINE
               | ID EQU pexpr NEWLINE