## Section23Side-by-Side Gallery

This subsection attempts to survey all the possible items that can be placed into a sidebyside element, in various combinations. While intended to be exhaustive across contents, it does not test all possibilities, and is not meant to be instructive (see Section 22 for that). The layout is identical for each sidebyside, 5% margins, panel widths of 40% and 45%, leaving 5% for the space between the panels. The vertical alignment is left at the default, top.

Note that these two chunks of verbatim text will very likely exceed the right side of a too-skinny panel. We have severly edited these two examples from previous appearances just to fit here.

A tabular can exceed the width of its panel in print, while in HTML it may reflow individual cells to stay within a panel, depending on their contents.

Be aware that the lines of pre can spill outside of its panel without any word-wrapping. So you may need to vary panel widths or rearrange line breaks manually. Page width is a scarce resource.

Images will scale to fill their panel's width. We provide no services to change the aspect ratio of your images, that is your responsibility to accomplish elsewhere. This rectangular image will have slightly different widths, and so will be slightly deeper in the right panel (at a 45:40 ratio). Remember, vertical alignment is at the top.

Now we turn to “captioned” items: figure, table, listing, and the anomalous “named list”, list, whose future is uncertain. We test subcaptions here. Note that many different atomic items can go in a figure, and largely they will behave in a sidebyside much as they do when placed in a panel all by themselves (i.e. captionless).

Now we have some more interactive elements

Videos can be placed quite compactly for HTML output, but we display a fair amount of information for a YouTube video in print, and therefore two videos side-by-side gets pretty crowded. The examples above have the bare minimum amount of information attached (not in an overarching figure), and the bare amount which which is displayed in print. We could relax our common spacing to make it a bit better. For other examples see Section 16.

We make an exception to our common layout and put one YouTube video, with a start and end time into a single panel of a sidebyside as a figure with a title and a caption that is rendered as a sub-caption. Read about “side-by-side” groups (sbsgroup) and experiment with stacking several sub-captioned videos into an overall captioned figure (Subsection 22.16).