Unclear difference in appearance between 1 with l, 0 with O can be a source of inconvenience for computer users. This summer, I’ve found this site informative, but I quickly forgot it.
Installation of many fonts in some popular Linux distributions can be done in GUI just like M$ Win*, so I attempted to change my default font on Vim, and a picture is worth a thousand words.
The following command from Vim Tips Wikia will do:
guifont=[font-name]:h[font-size]. (Escape the whitespace character
with a backslash, i.e. use
\ to represent a whitespace.)
GVim with Inconsolata 12pt