You’re interested in a recommended language style for code comments.
Favor an imperative style. An imperative style means that comments sound like commands you give to the code. For example: “Evaluate the button exists.”
Alternatively, a descriptive style can be used. A descriptive style expresses what the code is doing. For example: “Evaluates the button exists.” One style sounds like a command, and the other describes what’s happening. Be consistent regardless of the style chosen. Otherwise, your comments may cause confusion.