Category: <b>DOS-based task switchers/multitaskers</b>
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<pre><b>INT 15 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK</b>

	AH = 04h
	AL = mailbox number (00h-3Fh)
	CX = message length in bytes
	DS:SI -&gt; message
Return: AH = status
	    00h successful
	    01h out of message memory
	    02h invalid mailbox number
Note:	the message is copied into a system buffer; the caller may immediately
	  reuse its buffer
SeeAlso: AH=05h"MultiDOS"
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