Category: <b>DOS-based task switchers/multitaskers</b>
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<pre><b>INT 21 - DoubleDOS - ADD CHARACTER TO KEYBOARD BUFFER OF CURRENT JOB</b>

	AH = E3h
	AL = character
Return: AL = status
	    00h successful
	    01h buffer full (128 characters)
SeeAlso: AH=E1h"DoubleDOS",AH=E2h"DoubleDOS",AH=E8h"DoubleDOS"
SeeAlso: AH=F3h"DoubleDOS"
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