-We'll tend to write <code>(λa M)</code> as just `( \a M )`.
+We'll tend to write <code>(λa M)</code> as just `(\a M)`, so we don't have to write out the markup code for the <code>λ</code>. You can yourself write <code>(λa M)</code> or `(\a M)` or `lambda a M`.
<blockquote>
<blockquote>
-**Application**: `(M N)`
+<strong>Application</strong>: <code>(M N)</code>
</blockquote>
Some authors reserve the term "term" for just variables and abstracts. We won't participate in that convention; we'll probably just say "term" and "expression" indiscriminately for expressions of any of these three forms.
</blockquote>
Some authors reserve the term "term" for just variables and abstracts. We won't participate in that convention; we'll probably just say "term" and "expression" indiscriminately for expressions of any of these three forms.