Update

Saves the current selection in the tag.

Count:

Here, the number of saved, selected elements is shown.

Select

Only the selections saved in the tag will be selected. If other selections were made in the Viewport, the Shift and Cmd/Ctrl keys can be used to add these selections to or exclude them from the selection.

Deselect

All elements of the saved selection will be deselected (the selection state of other elements will not be affected).

Hide

All elements of the saved selection will be hidden (the selection state of other elements will not be affected).

Show

Makes all hidden elements of the saved selection visible.

Solo

This command only shows the selection saved in the tag and hides all other elements.

Show All

All elements will be shown, independent of the saved selection.

Select: Shift to add, Ctrl to remove from selection.

This short help text serves to remind you how the Shift and Cmd/Ctrl can be used to affect the selection process in the Viewport.