TGAL Manual

Appendix C Error Messages
060865 Tandem Computers Incorporated C–1
TGAL prints error messages on a special page that follows the page which contains the
errors. TGAL prints up to 10 error messages for each page. More errors can be
contained on one page, but TGAL only prints messages for 10 errors. TGAL does not
count the error page as part of the document, so the error messages do not affect the
page numbers. The general form of an error message is:
sequence number ( edit number ) message
sequence number
is the number of the erroneous line on the previous page. This number
corresponds to the numbers printed by the SEQ command.
edit number
is the EDIT line number of the erroneous line. The numbers printed by the
LINENO command correspond to this number.
message
is the error message.
LOOKAHEAD EXCEEDED
This message occurs when a NEED, CENTER, or TAG command specifies a “B” or a
trigger character, and the blank line or trigger character is not found within the next
100 lines. This error is printed on the page following where the command first occurs.
If the NEED command causes the error, TGAL puts out a blank page where the
command occurred, prints this error, continues the text on the next page, and ignores
the command. If you use the NEED ON form of the command and do not turn it off
within the next 100 lines, TGAL ignores the command, although it still prints this
error.
If the CENTER command caused the error, TGAL centers the next 99 lines. If you use
the CENTER ON form of the command and do not turn it off within the next 100 lines,
TGAL does not report an error but continues centering lines either until the end of the
file or until you turn off the command.
If the TAG command caused the error, TGAL tags the next 99 lines. If you use the
TAG ON form of the command and do not turn it off within the next 100 lines, TGAL
does not report an error but continues tagging lines either until the end of the file or
until you turn off the command.