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Document Classes 
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Valid LaTeX document classes include: 
	article 
	report 
	letter 
	book 
	slides 
Other document classes are often available. See section 
Overview of LaTeX and Local Guide, for details. They are 
selected with the following command: 

	\documentclass [options] {class} ::documentclass::

All the standard classes (except slides) accept the following 
options for 
selecting the typeface size (10 pt is default): 
	10pt, 11pt, 12pt 
All classes accept these options for selecting the paper size 
(default is letter): 
	a4paper, a5paper, b5paper, letterpaper, 
	legalpaper, executivepaper 
Miscellaneous options: 
	landscape -- selects landscape format. Default is portrait. 
	titlepage, notitlepage -- selects if there should be a 
		separate title page. 
	leqno -- equation number on left side of equations. Default 
		is right side. 
	fleqn -- displayed formulas flush left. Default is centred. 
	openbib -- use "open" bibliography format. 
	draft, final -- mark/do not mark overfull boxes with a rule. 
		Default is final. 
These options are not available with the slides class: 
	oneside, twoside -- selects one- or twosided layout. 
		Default is oneside, except for the book class. 
	openright, openany -- determines if a chapter should 
		start on a right-hand page. Default is 
		openright for book. 
	onecolumn, twocolumn -- one or two columns. Defaults 
		to one column. 
The slides class offers the option clock for printing the 
time at the bottom of each note. 

If you specify more than one option, they must be separated 
by a comma. Additional packages are loaded by a 

	\usepackage[options]{pkg} ::usepackage::

command. If you specify more than one package, they must be 
separated by a comma.
 
Any options given in the \documentclass command that are 
unknown by the selected document class are passed on to 
the packages loaded with \usepackage.