New in v1.7 If you ever wanted to quickly create rough guides, Guide Stamping is what you were after. With the Stamp button on the guide palette or with the S key, you can invoke Guide Stamping.

This overlays a dark transparent surface on which you can do a series of Clicks to lay out some guides. By default the guide is vertical. If you hold the Option key, the stamp-line flips to a horizontal one and can now be used to lay out horizontal guides.

Once you are happy with the set of guide-stamps, hit Enter to create the guides. Hit Esc to cancel out anytime.

Tip Don’t try to be too precise when stamping out guides. You can always adjust the actual guide after creation.