Xerox 4450 - Manual (Page 54)

TROUBLESHOOTING
Table 4-2. Hints and tips (continued)
Keywords Hints and tips
Coding text • Use a COMMENT command. Remember that different fonts of a given point size are
not necessarily the same physical size.
• Be aware that vertical error messages, generated when the system calculates that too
much text has been specified for placement in a box, are an approximation.
• Use the TEXT SPACED AT command to force exact text placement.
• Avoid placing too many small characters in one area of the page.
• Avoid overlapping characters to achieve bolding or other effects. Use the correct
font whenever possible.
• Avoid too many font switches on the same text line. This creates overhead in the
printing process.
Coding sections • Use a COMMENT command.
• Use coordinates based at 0,0 when defining a section. Then place the section at the
locations you want.
Source copy If the source filename (.FSL) and the form name (the name that follows the FORM
keyword) do not agree, an .FSL file is created that has the same name as the form name.
Therefore, when you copy X.FSL to Y.FSL and compile Y.FSL without changing the form
name in Y.FSL, the original X.FSL is deleted and a new X.FSL is created from the Y.FSL
source. Furthermore, the form file (.FRM) that is created is X.FRM and not Y.FRM. If you
wish to create a distinct source using another .FSL as a base, you need to change the
form name to the same name as the source name, or to some other name that does not
already exist. Two files with the same name and type cannot reside on the system.
Image complexity factors
Form design is limited by physical restrictions on the amount of
image data (characters and lines) that can be printed on a scan
line and on a page.
Line tables
Forms Description Language (FDL) line tables are internal FDL
data structures that provide a record in memory of the lines to
be drawn on a page. These tables allow the system to find the
corners and edges of boxes when they are referenced later.
Since excessive amounts of memory would be required to store
every line, the FDL compiler retains only the memory of the
longest lines that pass through any given coordinate in a
particular direction. FDL replaces dotted or broken lines with an
invisible line of the same length.
Line table limits The FDL line tables can store 1,999 vertical and 1,999 horizontal
lines in memory. When you exceed either of these line table
limits, the following message is displayed:
TOO MANY HORIZONTAL OR TOO MANY VERTICAL LINES
This message warns you that the new user-specified line cannot
be retained in the table. The message is of no real consequence
to you unless the new line is intended as the side of a box. In
that case, the box is not found and your form may not compile.
4-4 XEROX 4050/4090/4450/4650 LPS FORMS CREATION GUIDE