Read possible solutions and none worked. One said to go to TB Preferences > Display>Advanced> Other Languages, went from 18 to 36>Ok, but did not change font size in TB window. Another solution was to use 3 bars> Options>Options>etc, but I had not "Options" from the 3 bar choice. Probably missing something, but TB reverting to small font size is very frustrating. Is there a way to go back to older version and use the old TF&SC now disabled on the new 68.3.1?? After looking at all the questions about this issue, it seems that is should be considered with all updates. Guess developers all must have great eyesight. Thanks for any help. C Sanders