Small Capitals are in general cast to Roman founts only, and are used for
the purpose of giving a stronger emphasis to a word than that conveyed
by Italic. They are likewise used for running heads, heads of chapters,
&c. The first word of every section or chapter is commonly put in small
capitals; but when a two-line initial letter is used, the remainder of
the word should be in capitals.
The small capitals C, O, S, V, W, X, Z so closely resemble the same
letters in the lower case, that care is required to prevent intermixing.
In manuscript, small capitals are denoted by _two lines_ drawn under the
words.
Italic words are designated by a _single stroke_ underneath.