Comment #3 on issue 2156 by asmeurer: Limit pretty print bug http://code.google.com/p/sympy/issues/detail?id=2156
The problem is that in a monospace font, the single character arrow is too small. It needs to be two characters long.
It would be better to have a - character that lined up with some right facing arrow head character, or just a regular right facing arrow with a big head (something like ➜). I also found this site (http://xahlee.org/comp/unicode_arrows.html), which seems to be more comprehensive (except it doesn't give the code points).
The LaTeX math on http://en.wikipedia.org/wiki/Limit_(mathematics) will show you how LaTeX renders it, which as far as I'm concerned is the best thing you can model something after as far as typesetting mathematical formulas goes.
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