Current element v is move to val page forward (if positive, backward if negative).

The resulting value is clamped between 0 and n

A selector showing all the n items, all clickable to jump to that position.

That buttons are rounded with previous and next buttons.

• n is the number of items
• selected is the number of the item to show
• opts-go-to returns opts to the create a tag moving to an absolute position
• opts-go-rel returns opts to create a tag relatively moving