The Goto Line search function brings up the Goto Line window where you can enter the line number that you want to move the cursor to. It is not necessary to have the line numbers displayed in the gutter to use this function, but it would certainly be helpful to see the line numbers in order to select the line number to move the cursor to.
To move the cursor to the beginning a of specific line
Select Search | Goto Line [Ctrl + Alt + G].
Enter the line number.