BASIC CONCEPTS
Negative coordinates
Negative x and y values also may be used to place form elements
above and to the left of the form origin, as long as the values are
within system page boundaries.
UNIT value
The unit value of the GRID command specifies the unit of
measurement FDL commands use to position form elements on
the page. Optionally, you can select a predefined format that
automatically provides grid unit values. Individual FDL commands
may override GRID unit values.
Predefined formats
A set of predefined print description entries or formats, having
standard format specifications, is provided on the operating
system software (OSS) tapes. Table 2-1 lists the standard LPS
print formats. You may use these standard formats or define your
own to suit your specific needs. These standard formats provide
commonly used impact printer conversion formats for use with
specific page sizes and orientations. (Refer to table 2-1.) Use the
Xerox Design Ruler to assist you in measuring character and line
spacing. The ruler has eight scales that conform to the standard
format grid. (Refer to table F-1.)
FMT1 (landscape) or FMT6 (portrait) is used by FDL to provide
default values for page orientation, form origin, and grid unit
dimensions, provided there are no explicit overriding parameters.
Unless overridden by an explicit orientation PAGE SIZE
parameter, the virtual page size in a predefined format is always
the sysgen-specified paper size. The virtual page origin is located
at the upper left corner of the physical page.
2-8
XEROX 4850/4890 HIGHLIGHT COLOR LPS FORMS CREATION REFERENCE
