CVAR_LOOKUP      2811 variable.c         CVAR_LOOKUP(0, {if (!front) front = klass; target = klass;});
CVAR_LOOKUP      2845 variable.c         CVAR_LOOKUP(&value, {if (!front) front = klass; target = klass;});
CVAR_LOOKUP      2869 variable.c         CVAR_LOOKUP(0,return Qtrue);