### Hypertext Help with LaTeX

## \boldmath

The `\boldmath`
declaration switches to a bold
math italic font; this causes letters, numbers, and
**most** symbols used in math mode to be set in a
bold type.

(In LaTeX2e
**everything** in the formula is set in a bold font.)

The `\unboldmath`
declaration switches
back to the normal math italic font.

Note, these commands should **not** be used in
math mode. Thus the scope of the
declaration must include the
math mode expressions to which you want it to apply.

If you want only part of a formula to be bold an
`\mbox` command is useful:

\( Regular formula + \mbox{\boldmath$ Bold part$} = 0 \)

Both `\boldmath` and `\unboldmath` commands are
fragile.

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Revised 7 Jul 1995.