Visibility option data type

This controls whether an element's contents (including all of its descendents) are displayed by a consumer.

In contrast to "display: none", "visibility: hidden" does not affect the layout of any other elements in the document. For example, the contents of a hidden <event> will not be shown, but the place where the event would have appeared will still occupy space in the containing measure.

Allowed values

visible Default. The element is visible.
hidden The element is hidden.