- mailbox-timeout-condition? OBJprocedure
Is the OBJ a mailbox timeout condition?
A mailbox timeout condition is a composite condition of 'exn, 'mailbox, and 'timeout conditions.
The 'exn condition has properties of 'location, 'message, 'arguments, and 'call-chain.
The 'mailbox condition has properties of 'box.
The 'timeout condition has properties of 'time, and 'value.