Thanks. I agree that closing the LH pane improves readability, but from TXT files I still think it's too small. As a separate issue, when I made these tests yesterday before posting I did try that, but with this result:
The same happened again today at first. But I then tried a soft reset of my iPad and that seems to have fixed whatever glitch caused that problem. The same file now looks like this:
Although better, IMO this is still unsatisfactorily small in a large file (before the further degradation caused by the scaling process used in this forum).
BTW, your example was of text from a DOC file, not a text file, which my tests indicate renders larger and clearer. Obviously it will depend on font type, size and style, but it's always better than from a text file.
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Terry, East Grinstead, UK