beamer support for layout divs (#1669)

Author: cscheid

docs/presentations/beamer.qmd

@@ -97,6 +97,11 @@ The class `onlytextwidth` sets the `totalwidth` to `\textwidth`.
 
 See Section 12.7 of the [Beamer User's Guide](http://mirrors.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf) for more details.
 
+### Panel Layout
+
+In addition to using the presentation-native `columns`/`column` syntax described above, you can also use Quarto's [panel layout](/docs/authoring/figures.qmd#complex-layouts) features using divs with the `layout` class.
+Quarto will convert those to Beamer columns as if they were written with the above syntax.
+
 ## Beamer Options
 
 Set additional options to change the appearance of PDF slides using `beamer`: