Guides are non-printing, non-exporting lines that float over page objects and assist with their positioning. They can be created and positioned by dragging from a ruler (for 'by eye' placement) or via the Guides Manager (for precision using the document's units or a percentage).
To add a guide:
Do one of the following:
Drag from either the horizontal or vertical ruler which can be switched on via the View menu.
From the View menu, select Guides Manager. Click the Add new guide icon for either horizontal or vertical guides.
To move a placed guide:
Do one of the following:
Drag the guide with the Move Tool when you see the cursor change.
From the View menu, select Guides Manager. Double-click on the value for the guide you want to edit and type a new position into the value field. (Note that you do not need to type the units.)
To position guides by percentage:
From the View menu, select Guides Manager.
Select the Percent option.
Percentages are calculated from the top-left of the document page.
To show or hide guides:
From the View menu, select Show Guides. A check mark is displayed next to the menu item when the guides are visible.
To remove guides:
Do one of the following:
With the Move Tool selected, drag the guide off the page.
From the View menu, select Guides Manager. Click to select the value for the guide you want to delete and then click the Remove guide icon.