However, tables can be nested, rows and columns spanned, and so forth, providing considerable flexibility. There are a very small, and finite number of fonts available. The standard serif font is used for regular text. Teletype is used for spoken or typed transactions, i.e., net procedures, packet BBS commands, and the like. Bold Standard .
Bold standard is used for emphasis.
Font Sizes . In general, do not change font sizes within your document. Six depths are allowed. The document title becomes a centered level-one heading, separated from the body of the document by a vertical rule. Illustrations should be simple, and reasonably sized.