LD	(P-FLAG),+01	Set P-FLAG to OVER 1.
		LD	A,+20	A 'space'.
		CALL	0B65,PO-CHAR	Print the character.
		POP	AF	Fetch the old value of
		LD	(P-FLAG),A	P-FLAG.
		RET		Finished.
				Note: The programmer has
				forgotten to exit via PO-STORE.

THE 'CARRIAGE RETURN' SUBROUTINE
If the printing being handled is going to the printer then a carriage return character leads to the printer buffer being emptied. If the printing is to the screen then a test for 'scroll?' is made before decreasing the line number.

0A4F	PO-ENTER	BIT	1,(FLAGS)	Jump forward if handling
		JP	NZ,0ECD,COPY-BUFF	the printer.
		LD	C,+21	Set to lefthand column.
		CALL	0C55,PO-SCR	Scroll if necessary.
		DEC	B	Now down aline.
		JP	0DD9,CL-SET	Make an indirect return via
				CL-SET & PO-STORE.

THE 'PRINT COMMA' SUBROUTINE
The current column value is manipulated and the A register set to hold +00 (for TAB 0) or +10 (for TAB 16).

0A5F	PO-COMMA	CALL	0B03,PO-FETCH	Why again?
		LD	A,C	Current column number.
		DEC	A	Move rightwards by two
		DEC	A	columns and then test.
		AND	+10	The A register will be +00 or
				+10.
		JR	0AC3,PO-FILL	Exit via PO-FILL.

THE 'PRINT A QUESTION MARK' SUBROUTINE
A question mark is printed whenever an attempt is made to print an unprintable code.

0A69	PO-QUEST	LD	A,+3F	The character '?'.
		JR	0AD9,PO-ABLE	Now print this character instead.

THE 'CONTROL CHARACTERS WITH OPERANDS' ROUTINE
The control characters from INK to OVER require a single operand whereas the control characters AT & TAB are required to be followed by two operands.
The present routine leads to the control character code being saved in TVDATA-lo, the first operand in TVDATA-hi or the A register if there is only a single operand required, and the second operand in the A register.

0A6D	PO-TV-2	LD	DE,+0A87	Save the first operand in
		LD	(TVDATA-hi),A	TVDATA-hi and change the
		JR	0A80,PO-CHANGE	address of the 'output' routine
				to PO-CONT (+0A87).

Enter here when handling the characters AT & TAB.

0A75	PO-2-OPER	LD	DE,+0A6D	The character code will be
		JR	0A7D,PO-TV-1	saved in TVDATA-lo and the
				address of the 'output' routine
				changed to PO-TV-2 (+0A6D).

Enter here when handling the colour items - INK to OVER.

0A7A	PO-1-OPER	LD	DE,+0A87	The 'output' routine is to be
				changed to PO-CONT (+0A87).
0A7D	PO-TV-1	LD	(TVDATA-lo),A	Save the control character code.

The current 'output' routine address is changed temporarily.