+
+.Whitespace
+[caption='Special syntax {counter:syntax}: ']
+====
+All character codes less or equal to 32 are regarded as "whitespace".
+====
+
+.Rest-of-line comment
+[caption='Special syntax {counter:syntax}: ']
+====
+The "#" character following whitespace starts a line comment and the
+rest of the line is ignored. Note that this is also recognised with
+<<p_lparen,parethesis commenting>>.
+====