Book
In addition to considerations of proportion for the marginal and text areas, book design requires some serious consideration in terms of how the content influences decisions made in relation to the use of the text area.
Books that have only continuous text matter for their content may provide more obvious examples in terms of the division of the typographic page into margins and text area. This will still include margins used to contain running heads, footers and folios. The book itself will also divide into sections of prelims or front matter, text matter (the main body of the book) and end matter. Continuous text matter may be set to a single measure (width), as in novels, for example, or to several columns in cases where the book itself is of a large size.
Short, in-depth Content matter, such as that found in dictionaries and encyclopaedias, tends to be set in columns as this allows for easier access to and retrieval of information
Textbooks mat often have a fairly comprehensive grid system to allow for the variety of content that they contain and in order to accommodate the variations in configuring text and image matter that this may necessitate. Margins may also be reduced to a minimum in cases where the amount of information to be included is given precedence over the considerations of 'white space'. for example.