The grid by text is factored into the layout by the text shape and volume. A variable that should always be considered is how many lines of type should be displayed on each page. This variable will determine the column widths and depth but will help as a starting point. There are additional factors to consider, like adjusting the text size, internal spacing, and the gutters between the columns. By figuring out these factors, it will ensure a structure that has the most desirable text setting throughout. The next step to figure out will be the resulting margins, which include the head, sides, and foot, so there is enough space to surround the text and ensure it is kept away from the edges. With all these factors, the designer will evaluate them by trying the columns to be broader or narrow, close or farther away from one another, until the layout structure seems fitting.