AT&T 6300 Programmer's Manual page 541

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DEB Statements

selects the active page, i.e., the page to be written

to by output statements to the screen. Apage is an

integer expression that results in a value of 0 or

128. Page 0 is the VDC page and page 128 is the

In the two 16-color graphics modes (101 and 102),

the active page is always zero.

is ignored, but is allowed for compatibility.

SCREEN 105, ,128

'Selects a graphics-on-graph-

ics overlay mode, with all sub-

sequent output sent to the

'Do not change modes,

but send subsequent

output to the VDC page.

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