\dd This command indicates that the paragraph attached to it
contains a \i{copyright statement} for the document. This text is
-usually displayed inline, just before the first chapter title but
-after any preamble text before that; but in some output formats it
-is given additional special treatment. For example, Windows Help
-files have a standard slot in which to store a copyright notice, so
-that other software can display it prominently.
+displayed inline where it appears, exactly like a normal paragraph;
+but in some output formats it is given additional special treatment.
+For example, Windows Help files have a standard slot in which to
+store a copyright notice, so that other software can display it
+prominently.
\dt \i\cw{\\versionid}
indexing an emphasised word will \e{not} want it emphasised in the
index.
+(In fact, \e{no} emphasis in the text inside \c{\\i} will be
+preserved in the index. If you really want a term in the index to
+appear emphasised, you must say so explicitly using \c{\\IM}; see
+\k{input-index-rewrite}.)
+
Sometimes you might want to index a term which is not explicitly
mentioned, but which is highly relevant to the text and you think
that somebody looking up that term in the index might find it useful