the select visible components button that allows you to toggle between the 2 modes

This button has disappeared in the interface for some reason. What is the search heading for this command and how do I reset this. The button should be located to the right side of the vertices,edges and faces buttons. It may be called the limit to selection visible button, but this brings up nothing in a search.Thanks

Limit selection to visible, in edit mode and in solid shading mode.

If you are in wireframe view you won’t see the option.