Miscellaneous Data works like all other data, but can not be shown at the map, the profiles nor the 3D Window. The Miscellaneous Data can be (almost) all form for file types.
The user interface for these data has a filtering option and number of entries is available, and the users can download and/or delete data, depending on assigned access levels.
When opening the Miscellaneous Data Information, it will look something like below.
Here you can edit 'Name' and 'Description'.