|  |  |  | 7.5 Ipe symbols used from text objects | 
Presentations often make use of itemize environments.  You can
make these prettier in a number of ways:
You can color your bullets:
<preamble>
\def\labelitemi{\LARGE\textcolor{red}{$\bullet$}}
</preamble>
Enumeration numbers could be put in a colored box:
<preamble>
\newcommand{\labelenumi}{\fbox{\Roman{enumi}}}
</preamble>
You could use the Dingbats font for nice enumerations, for instance
by putting \usepackage{pifont} in your preamble, and then having
text objects with \begin{dinglist}{43} or \begin{dingautolist}{172}
(or use 182, 192, 202 for various circled numbers).
You can mark items as "good" and "bad" using these "bullets":
Bad item:  \textcolor{red}{\ding{55}}
Good item: \textcolor{green}{\ding{52}}
Finally, you can custom design your own bullets by creating an Ipe symbol for it. For instance:
<symbol name="bullet(sfpx)">
  <path matrix="2 0 0 2 0 0" pen="sym-pen" stroke="sym-stroke" fill="sym-fill">
    0 0 m -1.0 0.333 l -0.8 0 l -1.0 -0.333 l h</path>
</symbol>
<preamble>
  \def\labelitemi{\raisebox{0.5ex}{\hbox to 0.3em%
      {\ipesymbol{bullet(sfpx)}{blue}{yellow}{normal}}}}
</preamble>
Note the use of the \ipesymbol{name}{stroke}{fill}{pen} command. It
allows you to use an Ipe symbol from inside a text object.  The symbol
is magnified proportionally to the ex-height of the current font at
the position where it is used.  (And so the symbol should be designed to be
the correct size for a font of ex-height 1pt.)
In the following example, we redefine the bullet to be a blue glassy sphere:
<gradient name="ball" type="radial" coords="-4 10 2 0 0 18">
  <stop offset="0" color="1 1 1"/>
  <stop offset="1" color="0 0 1"/>
</gradient>
<symbol name="sphere">
  <path matrix="0.04 0 0 0.04 0 0" fill="blue" gradient="ball">
    18 0 0 18 0 0 e
  </path>
</symbol>
<preamble>
  \def\labelitemi{\raisebox{0.5ex}{\hbox to 0.3em{\ipesymbol{sphere}{}{}{}}}}
</preamble>