Using Go To

When you choose Go To in the Find menu, or press Command-L, CotEditor displays the Go To dialog box to give you quick access to the character(s) or the line(s) you want to see.

In the dialog box, choose either Character or Line, enter the character/line number, and click Select.

The same applies when you choose Character.

You can toggle between Character and Line by pressing Command-L while the Go To dialog box is open.