Formating Guidelines ..for example
Headings should be done in San Seif fonts should be large about font 16 and centred. Thus making it easy to read.
Body text should be in serif font so that the text is fliud, it should be in size 12 font and the line spacing about 1.5
it ensures that company documents are consistent thus providing unity and ensureing secrity of comany (harder to froge etc..)
but that is just an example of one there are many different one's thay change in accordance to company guidelines!!!
hope that helps