The command \marginpar[left]{right} creates a note in the
margin. The first line will be at the same height as the line
in the text where the \marginpar occurs.
When you only specify the mandatory argument right, the text
will be placed
1. in the right margin for one-sided layout
2. in the outside margin for two-sided layout
3. in the nearest margin for two-column layout.
4. By issuing the command \reversemarginpar, you can
force the marginal notes to go into the opposite
(inside) margin.
When you specify both arguments, left is used for the left
margin, and right is used for the right margin.
The first word will normally not be hyphenated; you can
enable hyphenation by prefixing the first word with a
\hspace{0pt} command.
