texinfo: @minus

Glyphs for Text

@geq @leq

@textdegree

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14.7.9 '@minus' (-): Inserting a Minus Sign
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Use the '@minus{}' command to generate a minus sign.  In a fixed-width
font, this is a single hyphen, but in a proportional font, the symbol is
the customary length for a minus sign--a little longer than a hyphen,
shorter than an em-dash:

     '-' is a minus sign generated with '@minus{}',

     '-' is a hyphen generated with the character '-',

     '--' is an em-dash for text.

In the fixed-width font used by Info, '@minus{}' is the same as a
hyphen.

  You should not use '@minus{}' inside '@code' or '@example' because the
width distinction is not made in the fixed-width font they use.

  When you use '@minus' to specify the mark beginning each entry in an
itemized list, you do not need to type the braces (Note: @itemize).

  If you actually want to typeset some math that does a subtraction, it
is better to use '@math'.  Then the regular '-' character produces a
minus sign, as in '@math{a-b}' (Note: Inserting Math).