Guides are axis-like infinite lines that divide — but do not break or split — an object into equally sized sections. This helps you, for example, to distribute evenly an additionally drawn object or a group of objects along the base object.
An object has been split. As a result, three discrete object have been created. |
Guides have been added to an object (highlighted). The object remains in one piece. |
Guides are useful when you need to divide an object into equally sized sections so that you can draw objects to a specific part of it. An example is when drawing box dividers need to be positioned at equal distances along a line. You can use guides, draw a divider at one of the sections, and then translate the drawn object along the line at the rest of the intersections between the object and the guides.