Comment #1 on issue 2938 by [email protected]: Pretty print of tall factorials should give tall !'s
http://code.google.com/p/sympy/issues/detail?id=2938

For unicode, for the line, I like either BOX DRAWINGS LIGHT VERTICAL (│) or BOX DRAWINGS HEAVY VERTICAL (┃).

For the dot, a . seems too small:


⎛ 2⎞ │
⎜x ⎟ │
⎜──⎟ │
⎝2 ⎠ .

⎛ 2⎞ ┃
⎜x ⎟ ┃
⎜──⎟ ┃
⎝2 ⎠ .

There are circle characters, which seem too big (at least in the font I am using):


⎛ 2⎞ │
⎜x ⎟ │
⎜──⎟ │
⎝2 ⎠ ●

⎛ 2⎞ ┃
⎜x ⎟ ┃
⎜──⎟ ┃
⎝2 ⎠ ●



⎛ 2⎞ │
⎜x ⎟ │
⎜──⎟ │
⎝2 ⎠ ⚫

⎛ 2⎞ ┃
⎜x ⎟ ┃
⎜──⎟ ┃
⎝2 ⎠ ⚫

Those characters are BLACK CIRCLE and MEDIUM BLACK CIRCLE, respectively. According to the Mac OS X character viewer, which I used to find these, the size of those characters varies a lot by font.

Thoughts?

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