Commands take one of two forms:
\
) followed by a single special character
\
) followed by a string of letters
The second case is case-sensitive;
\Gamma
is different from
\gamma
.
These commands are terminated by a nonletter, i.e., a blank, a number,
a punctuation mark or special character. For commands which produce text a trailing blank is interpreted as the
end of the command, which does not automatically create a space, so
you may have to do something to create an
interword space after this text. Commands may have mandatory arguments, which are input in braces
({}
).
They may also have optional arguments, which are input in square brackets
([]
).
These must be used for entities which are not already defined. To redefine something use, for example,
\renewcommand
.