Chapter 8. PPL3 Plus Emulation
GEK-00029B
254
Horizontal Advance Increments
Fixed HAI
Fixed horizontal motion does not vary from character to character or
font to font. The HAI is explicitly defined by control functions.
A fixed HAI is selected by any of the following:
▪
Pitch Select Mode (DECPSM) reset, and Set Horizontal Pitch
(DECSHORP) with last valid Ps
≠
0
▪
Spacing Increment (SPI) with last valid Pn2
≠
0
▪
Set Horizontal Spacing (SHS) using any valid Ps
Control
Function
Type
Margin effect
Parameter Used
Flags
Autowrap
Relative
-
All
Clears PLU/PLD count and
Superscript/Subscript count.
Backspace
Relative
Not possible beyond left
margin
All
Active only if right margin flag
is cleared
Carriage
Return
Absolute
-
All
Clears RMF
Cursor Up
Relative
Not possible to move above
top margin
Parameter value
more than 5
decipoints
FCF Sets if cursor forced above
top margin
Graphics
Carriage
Return
Absolute
Cursor moves back to
Graphics left margin (left
margin where graphics
starts).
All
-
Graphics
Next line
Relative
Forces Graphics carriage
return, New line beyond
bottom margin leads to Form
Feed
All
-
Form Feed
Absolute
-
All
Sets FCF
Clears RMF
Clears PLU/PLD and
Superscript/Subscript
Horizontal
Position
Absolute
Absolute
Movement is possible with in
left and right margin.
All
Pn less than right margin
Resets RMF
Other Pn values Sets the RMF
Horizontal
Position
Backward
Relative
Maximum backward
movement possible is up to
left margin.
All
Command ignored if RMF is
Set
Horizontal
Position
Relative
Relative
New position beyond right
margin leads to autowrap if
autowrap is ON.
All
If autowrap OFF then new
position beyond right margin
Sets RMF
Horizontal
Tab
Absolute
If there is no tabs in the tab
table or no valid tab between
the current position and RM
then HT brings the cursor to
right margin (RM).
All
HT beyond right margin Sets
RMF
Index
Relative
IND in bottom margin leads
to FF
All
Clears superscript/subscript
and PLU/PLD count
Line Feed
Relative
LF in bottom margin leads to
FF
All
Clears superscript/subscript
and PLU/PLD
Next Line
Relative
NEL in bottom margin leads
to FF
All
Clears RMF
Clears superscript/subscript
and PLU/PLD
Partial Line
Down
Special
Can go down to one PLD
position below bottom
margin
All
(Minimum
PLU/PLD count
value is -255)
Decrements the PLU/PLD
count
Содержание 5000 Series
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