User`s guide

Length, Set Horizontal Margins, for example). The physical print position does not move outside the range
of these two parameters. The left margin (LM) and right margin (RM) are variable parameters within the
presentation surface. The logical print position does not move outside the range of the vertical margins nor
outside the horizontal margins + 1. The following figure shows the presentation surface and the
relationships of some of these parameters.
CPP Current Print Position (LM ≤ CPP ≤ RM).
CPL Current Print Line
MPP Maximum Print Position (in characters at current CPI)
PMPP Physical Maximum Print Position. The largest number of characters that can be placed on one line
of the surface (the largest value that MPP can assume).
LM Left Margin
RM Right Margin
MPL Maximum Page Length (in lines at current LPI)
Notes:
1. The host should set the limits of the presentation surface if the default or previous values are not
acceptable.
2. The operator should align the physical paper so that it matches the logical presentation surface.
Also created with this surface is a pair of numbers (CPL and CPP) which specify the line number and
column number where the next graphic will be printed. These internal values are the logical position on the
presentation surface.
The variable parameters have default values which are established when the printer is initialized. The
standard power-on defaults are:
MPP (width) Operator panel setting
40 Programmer Manual