Thank you all for such a lot of very helpful replies. I have been looking through the recommended fonts and am pleasantly surprised by how clear, legible and well differentiated some of them are.
I have been using Bitstream Vera Sans Mono in KWrite, which gives me all the colours and spacing and is very easy to read, but Bitstream Vera Sans Mono, like Bitstream Vera Sans itself, does not distinguish well between I and l, nor between '' and " (which are in fact different, but the difference is noticeable only if you juxtapose them). I have already installed Inconsolata because there turned out to be a Debian package for it, so it took less than a minute to search for it - yes, it was there - and install it. And I have set KWrite to use it. Sadly, I am tied up all day tomorrow (it is late on Friday here) so I'll look into the other fonts on Sunday and work through the rest of your advice. I might even end up being able to code in Python - but if I do it will be because you have all hauled me over the fences. Lisi _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor