<para>
<literal>format=flowed</literal>-style messages (or <literal>f=f</literal>
-for short) are plain ASCII messages that consist of paragraphs which a receiver's
+for short) are <literal>text/plain</literal> messages that consist of paragraphs which a receiver's
mail client may reformat to its own needs which mostly means to
customize line lengths regardless of what the sender sent. Technically this is
achieved by letting lines of a ``flowable'' paragraph end in spaces.