CVAR_LOOKUP      1801 variable.c         CVAR_LOOKUP(0, {if (!front) front = klass; target = klass;});
CVAR_LOOKUP      1828 variable.c         CVAR_LOOKUP(&value, {if (!front) front = klass; target = klass;});
CVAR_LOOKUP      1852 variable.c         CVAR_LOOKUP(0,return Qtrue);