Find your way back and see formula arguments
Press ⌘F then Return to get back after opening a Find result. Scratch restores your grid selection and scroll position, or your place in Notes. The same action is available as Back to Find Origin in the command palette.
Formula suggestions show the argument names and what the function does. Type =su in a cell to see SUM(values, …). Press Tab or click the suggestion to insert the function and keep typing.