The following chart gives a brief description of the Exec functions that
control inter-task communication with messages and ports.  See the Amiga
ROM Kernel Reference Manual: Includes and Autodocs for details about each
call.

               Table 24-1: Exec Message and Port Functions
  _____________________________________________________________________
 |                                                                     |
 |       Function                   Description                        |
 |=====================================================================|
 |        addport()  add a public message port to the system list.     |
 |  createmsgport()  allocate and initialize a new message port (v37). |
 |  deletemsgport()  free a message port, created with createmsgport() |
 |                   (V37).                                            |
 |       findport()  find a public message port in the system list.    |
 |         getmsg()  get next message from the message port.           |
 |         putmsg()  put a message to a message port.                  |
 |        remport()  remove a message port from the system list.       |
 |       replymsg()  reply to a message on its reply port.             |
 |_____________________________________________________________________|


               Table 24-2: Amiga.lib Exec Support Functions
  _____________________________________________________________________
 |                                                                     |
 |       Function                   Description                        |
 |=====================================================================|
 |     createport()  allocate and initialize a new message port, make  |
 |                   public if named                                   |
 |     deleteport()  delete a message port, created with createport(). |
 |_____________________________________________________________________|