Board Thread:Support Requests - Getting Technical/@comment-34951514-20191206164448/@comment-4522253-20191207181610

As a note, Portable Infoboxes are specifically designed to avoid having a caption AND a tab title for images.

As an explanation, for many user experiences it is important for one change (the tab, in this case) to reflect only a single response (the image, as opposed to the image + caption). Under portability and usability guidelines, this was the established rule the designers used. Therefore, the tab label is the caption, as they serve the same function: identifying what the image is, as opposed to the others in the tabbed set of images.

The "tabber" syntax inside Portable Infoboxes is actually an alias for the "gallery" function, which uses identical code underneath to create the display. The syntax (used outside an infobox) itself only allows for a file reference and a caption. So that there are not multiple variations of the gallery syntax (which can confuse users with special cases), the simplest solution was to disallow a third parameter in a row entry. This, not coincidentally, is also in line with the point above about simplicity.

Both the user interface designers and the coding engineers agreed that this was the ideal solution.