Editing GNU TeXmacs (section)

=== Mathematical typography ===
TeXmacs facilitates the inputting of mathematical formulas by mapping sequences of keyboard presses to symbols. For example, the symbol <math>\Rightarrow</math> can be input by typing {{kbd|1==>}}.

Some symbols have no such representation (<math>\Uparrow</math> for instance). These can be input with {{keypress|tab}} key (e.g. for <math>\Uparrow</math> the key presses are {{kbd|1==>}}{{keypress|tab}}{{keypress|tab}} . This keyboard-based entry differs from other formulae editors, that tend to provide point-and-click menus for this task.<ref>See the user manual : « [http://www.texmacs.org/tmweb/manual/webman-math.en.html#auto-6 Typing mathematical symbols] ».</ref>