"SIGNAL-REMOVE-EMISSION-HOOK" "SIGNAL-HAS-HANDLER-PENDING-P"
"SIGNAL-HANDLER-BLOCK" "SIGNAL-HANDLER-UNBLOCK"
"SIGNAL-HANDLER-DISCONNECT" "SIGNAL-HANDLER-IS-CONNECTED-P"
"SIGNAL-REMOVE-EMISSION-HOOK" "SIGNAL-HAS-HANDLER-PENDING-P"
"SIGNAL-HANDLER-BLOCK" "SIGNAL-HANDLER-UNBLOCK"
"SIGNAL-HANDLER-DISCONNECT" "SIGNAL-HANDLER-IS-CONNECTED-P"