# Domain/OS calls: mbx_$

## Mailbox

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- mbx_$check_room
- mbx_$chk_svr_hlpr_put_frg
- mbx_$client_window
- mbx_$close
- mbx_$close_fork
- mbx_$cond_get_rec_chan
- mbx_$cond_get_rec_chan_set
- mbx_$create_server
- mbx_$create_temp_server
- mbx_$deallocate
- mbx_$fork
- mbx_$get
- mbx_$get_conditional
- mbx_$get_ec
- mbx_$get_puid
- mbx_$get_rec
- mbx_$get_rec_chan
- mbx_$get_rec_chan_set
- mbx_$get_vec
- mbx_$get_xp
- mbx_$helper_more_room
- mbx_$init
- mbx_$init_helper
- mbx_$inq_flags
- mbx_$open
- mbx_$open_by_server
- mbx_$open_server
- mbx_$open_user_helper
- mbx_$open_xp
- mbx_$openu
- mbx_$put
- mbx_$put_chr
- mbx_$put_chr_cond
- mbx_$put_interrupt
- mbx_$put_rec
- mbx_$put_rec_cond
- mbx_$put_rec_frg
- mbx_$put_vec
- mbx_$reinitialize_server
- mbx_$release
- mbx_$release_uid_msg
- mbx_$resource_rls
- mbx_$serv_helper_deallocate
- mbx_$serv_helper_put_rec
- mbx_$serv_helper_put_rec_frg
- mbx_$server_window
- mbx_$set_fault_on_int
- mbx_$set_flag
- mbx_$set_loopback
- mbx_$set_noise_parameters
- mbx_$set_pgroup
- mbx_$set_sends_per_ack
- mbx_$signal
- mbx_$start_helper
- mbx_$streams_flag
- mbx_$timed_open
- mbx_$timed_openu
- mbx_$uid

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