If this item is ticked, then before typesetting foo.tex
will look
in foo.log
to see which format should be used.
(In log files created by the format appears after the `` &'' on line 2.)
If the log file exists and the format is known (i.e., exactly matches one of
the formats at the bottom of the TEX menu) then automatically changes
the current format if necessary. If the log file does not exist or does not
contain a known format then the current format will be used.
The state of ``Use Format in Log'' is remembered when you quit .
Note that if you manage to create a log file with a known but incorrect
format then you'll have to turn off ``Use Format in Log'' and manually select
the correct format before typesetting the corresponding input file.