Margins within a slide

When a slide is not full, the material is vertically centered within the slide. The command
$\begin{MD} \centerslidesfalse \end{MD}$
cause the material to be flush to the top, instead. The command
$\begin{MD} \centerslidestrue \end{MD}$
switches back to vertical centering. The right margin in slides is ragged by default. You can change this with the command
$\begin{MD} \raggedslides[len] \end{MD}$
<len> should be the maximum space between the end of the line and the right margin. The argument is optional; is equivalent to

  \raggedslides[1fil]

which gives a ragged right margin, as in L^ATEX's "flushleft" environment (the default). On the other hand,

  \raggedslides[0pt]

gives a justified margin, and

  \raggedslides[2em]

gives a semi-ragged margin. Note that as a margin becomes less ragged, hyphenation becomes more likely and more material fits on a slide.