# Explosives and implosives.
-unpack unpack ck_fun @ S S
+unpack unpack ck_fun @ S S?
pack pack ck_fun mst@ S L
split split ck_split t@ S S S
join join or string ck_join mst@ S L
syscall syscall ck_fun imst@ S L
# For multi-threading
-lock lock ck_rfun s% S
+lock lock ck_rfun s% R
threadsv per-thread value ck_null ds0
# Control (contd.)