lt ($$)
m undef
map undef
-mkdir (_;$) this prototype is not supported
+mkdir (_;$)
msgctl ($$$)
msgget ($$)
msgrcv ($$$$$)
readdir (*)
readline (;*)
readlink (_)
-readpipe unknown
+readpipe ($)
recv (*\$$$)
redo undef
ref (_)
rindex ($$;$)
rmdir (_)
s undef
-say (;*@)
+say undef
scalar undef
seek (*$$)
seekdir (*$)