User`s manual

7–72 Digital Emulation
Active Column and Active Line (Cursor Motion)
This section describes cursor positioning command sequences. Line printers
do not have a cursor like the blinking place–marker on most computer
screens. The cursor position on a line printer is the space where the next
character will print. In this manual, cursor refers to the currently active print
position. Its location is the intersection of the active column and active line.
Horizontal and vertical positioning command sequences allow you to move
the active position anywhere on the logical page.
You can also specify either absolute or relative motion. Absolute motion
specifies the distance to move from a specific point on the logical page.
Relative motion specifies the distance to move from the currently active print
position.
The Partial Line Up (PLU) and Partial Line Down (PLD) command
sequences set half line increments for superscripting and subscripting.
NOTE: Next Line (NEL), Reverse Index (RI), and Index (IND) control
characters also move the active position. (Refer to Table 7–2.)
Forward Index (IND)
ASCII Code ESC D
Hex Code 1B 44
Dec Code 27 68
Purpose Causes the active position to move to the following line’s corresponding
horizontal character position.
Discussion Pn specifies the active position.
Attempts to move the cursor below the bottom margin cause the cursor to
move to the corresponding horizontal position on the first printable line of
the next form.
In 8–bit mode, the Forward Index 8–bit control code can be used for this
function (refer to “Control Characters,” page 7–6).