PS TEXT FORMAT Reference Manual

Introduction to TFORM
11387 Tandem Computers Incorporated 3–3
Control Commands Control commands indirectly influence the output by affecting the action of
the formatting commands and the parameters they work with; these
commands also affect the execution and environment of TFORM.
ASSIGN computes a value from an expression and assigns that
value to a variable.
COMMENT allows you to insert explanatory comments into your
document without affecting formatting.
DEFINE specifies characters you want to use as box outlines,
trigger character, page-number representative, change
mark, and so on.
ENV changes system, volume, and subvolume names used in
file-name expansion for SOURCE and FILE commands.
ERROR allows TFORM to produce user-written error messages
from within a macro or function that are then integrated
with the normal error messages produced by TFORM.
Both types are listed on a separate errors page.
EXIT ends TFORM run. Although used primarily in interactive
mode, it can be inserted in the document file to signal early
termination.
FILE manipulates auxiliary input and output files. For example,
you can read name and address data to insert in a letter, or
write topical data to an index file.
PRINT specifies print options, such as printing selected numbered
pages or only changed pages, printing/not printing error
messages, and selecting bins on a cut-sheet feeder.
STYLE defines the overall style of the document, including form
size, margins, header and footer area structure, sentence
and paragraph styling, and font characteristics.