Grids: Organizing Your Layout
Non printing vertical and horizontal blue lines form a grid on the electronic page, creating an underlying structure for your layout. PageMaker's Master Page feature, found on the Window pull-down menu, makes the creation of a grid incredibly easy.
Margins and columns form the base of the grid, but you can intersect an unlimited number of vertical and horizontal blue lines across the columns to align headings, text, rules, and graphics with precision. To drag and drop a blue line, just click on the ruler surrounding the page.
Use the grid to organize the elements of your layout and unify the appearance of your publication.