is one where the content is an identifier. When simple
tags are expanded, the named identifier will be looked up in
<parameter>pattern</parameter> and the resulting list of values returned,
-joined together using comma. For example, to print the family name and style the
+joined together using comma. For example, to print the family name and style of the
pattern, use the format "%{family} %{style}\n". To extend the family column
to forty characters use "%-40{family}%{style}\n".
is one that expands a sub-expression. The tag contents
are the sub-expression to expand placed inside another set of curly braces.
Sub-expression tags are useful for aligning an entire sub-expression, or to
-apply converters (explained later) on an entire sub-expression.
+apply converters (explained later) to the entire sub-expression output.
For example, the format "%40{{%{family} %{style}}}" expands the sub-expression
to construct the family name followed by the style, then takes the entire
string and pads it on the left to be at least forty characters.