<p><code>parse()</code> returns the parsed but unevaluated expressions in an <code><a rd-options="" href="/link/expression?package=base&version=3.6.2" data-mini-rdoc="base::expression">expression</a></code>, a &#8220;list&#8221; of <code><a rd-options="" href="/link/call?package=base&version=3.6.2" data-mini-rdoc="base::call">call</a></code>s.</p> <p><code>str2expression(s)</code> and <code>str2lang(s)</code> return special versions of <code>parse(text=s, keep.source=FALSE)</code> and can therefore be regarded as transforming character strings <code>s</code> to expressions, calls, etc.</p>