Xerox 701P21091 - Manual (Page 67)

PDL principles and procedures
Using LCDS Print Description Language 1-39
Figure 1-6. Fixed pitch and proportional font character
spacing
1. Fixed pitch character cell
2. Proportionally spaced character cell
Because the length of a line printed with a proportional font is
relatively unpredictable, fixed pitch fonts are used for variable
data on a report to avoid overprinting of forms by variable data.
Proportional fonts are normally used for form data such as titles
and headings. A business letter is an example of the use of
proportional fonts for variable data. An example of the difference
in line length is illustrated in the following figure.
Figure 1-7. Character spacing examples
1. Proportional spacing
2. Fixed pitch spacing
Fonts are available in various families (for example, OCR and
Titan), sizes, and faces (for example, italic and bold). Refer to
the Font Reference Manual, delivered with your system, for more
information on fonts and for samples of the font families, sizes,
and faces available for use with your printing system.