y_entry</code>: <a href="#History%20List%20Management">History List Management</a>
<li><code>get_history_event</code>: <a href="#History%20Expansion">History Expansion</a>
<li><code>history_arg_extract</code>: <a href="#History%20Expansion">History Expansion</a>
<li><code>history_base</code>: <a href="#History%20Variables">History Variables</a>
<li><code>history_comment_char</code>: <a href="#History%20Variables">History Variables</a>
<li><code>history_expand</code>: <a href="#History%20Expansion">History E