Spacing parameters

**Figure:** Slide spacing parameters.
$\begin{figure}\hrule height 1pt \begin{center} \begin{tabular}{llc} {\em Command... ...stretch'' & ''1.2'' \end{tabular}\par \end{center}\hrule height 1pt \end{figure}$

The commands in Figure

are used to initialize some of the spacing parameters at the beginning of each slide environment and when "" is used in a slide environment. These are spacing parameters that should depend on the size of fonts and that in L^ATEX's "article" style would be set in "art10.sty", etc. These commands should all be changed with "", even though, except for the "stretch" parameters, their values should be lengths. Note that "ex" and "em" units are used because these are the units that depend of font sizes. Outside a slide environment, redefine the commands on the left if you want to change these spacing parameters. Within a slide environment, reset the parameters directly, or redefine the commands on the left and then use the "" command. In other L^ATEX styles, the extra distance between lines that is inserted when "" exceeds 1 is eaten up by tall or deep lines. E.g., if the line contains a table or a large math operator, there is probably no extra space at all. The advantage of this system is that the distance between baselines does not fluctuate with every tilde. The disadvantage is that lines can end up too close. In "seminar.sty", on the other hand, fraction
$\begin{MD} \slideskip \end{MD}$
of the extra space cannot be eaten, but up to fraction
$\begin{MD} \slideshrink \end{MD}$
of this extra space that cannot be eaten can be removed if there is too much material on the slide. This gives you added flexibility about how much material to include on a slide. Both and can be set with "" to a number between 0 and 1. The default value of is ".75" and the default value of is ".25". Set to "0" to revert to L^ATEX's usual behavior, as described above. For example, suppose you are using a 10pt font, is "1.2", is ".75", and is ".25". The "" for a 10pt font is normally 12pt, leaving a little space between the lines. Then "" is set to

"" × "12pt" = 1.2×12pt = 14.4pt

The extra space between lines that is inserted is thus 2.4pt, and

"" × 2.4pt = .75×2.4pt = 1.8pt

of this cannot be eaten by tall or deep lines. However, the space between lines can be reduced by up to

"" × 1.8pt = .25×1.8pt = .45pt

if the slide would otherwise be too long.