\documentclass[11pt,letterpaper, oneside, twocolumn]{article}
	% general syntax: \documentclass[options]{argument}
	% standard arguments:  article, report, book, letter, slides
	% options for the \documentclass command:
		% 10 | 11 | 12 pt fonts - 10pt is the default
		% oneside | twoside - different margin formatting
		% onecolumn | twocolumn - onecolumn default
		% landscape - display in landscape (sideways)
		% leqno - put equation numbers on the left side of page
		% fleqn - align displayed equations to the left
\pagestyle{plain}
	% plain: default for article and report document classes
	% empty: head and foot both empty.  Page numbers assigned but not printed.
	% headings: page number and other put in head
	% see Lamport p.89