From the NannyMUD documentation

LAST CHANGE

2001-09-29

NAME

        sfuns - sfuns - a concept

DESCRIPTION

	An sfun is an a 'simulated external function'. It behaves just like
	an efun, but is simulated in LPC. Those sfuns are defined in the
	/obj/simul_efun.c object.

SEE ALSO

        lfuns in concepts/lfuns

SEE ALSO

        efuns in concepts/efuns

SEE ALSO

        call_other in efun/object_related/call_other