Mouse Terminology

Click means click the left mouse button.
Right-click means click the right mouse button.
Don’t use click on: Click Merge to finish.
When referring to the mouse, use pointer.
Use drag by itself as a verb. The action of dragging includes dropping the item in place. For example: Drag the item to another day of the week.
Use hover instead of mouse over to describe moving the mouse pointer over an icon, field, or button. Write hover over instead of hover your mouse pointer over.
Don’t use mouse terminology when describing actions users perform in a mobile app. See Mobile Interfaces and Documentation.

Salesforce Style Guide for Documentation and User Interface Text