arserish</code> adds a parserish value to a pipeline, backtracking the entire pipeline if
anything within <code>myPipe</code> fails.</p>

<h3>-?</h3>

<p><code>myPipe -? parserish</code> adds a parserish value to a pipeline, backtracking the entire piplime
if <code>myPipe</code> fails or if <code>parserish</code> and following values in the pipeline fail without consuming input.</p>

<h3>+.</h3>

<p><code>+. parserish</code> marks a parserish value as captured.
If added to a pipeline, this captured value wi