spaces (ignored), and \e{emphasised text} as well as \c{code
fragments}.
+\#{This is an inline comment alone in a paragraph.}
+
\cw{This} is weak code; \cq{this} is quoted code. And \k{head}
contains some other stuff. \K{subhead} does too.
Oh, while I'm here: some special characters. The \\, \{ and \}
characters, to be precise. And their code equivalents, \c{\\},
-\i\c{\{}, \c{\}}.
+\i\c{\{}, \c{\}}. The ` and ' characters (grave and apostrophe)
+are special in some output formats.
\S{subhead} First subheading