Need to document arguments in functions which are not exported in R package? : <p>I am using the <code>devtools</code> package to check if a package I am developing is ready for submission to CRAN.</p>

<p>Using <code>Roxygen2</code> through <code>devtools</code>, I documented a small number of functions with <code>#'@export</code>, in order for them to be available when the package I am developing is loaded.</p>

<p>However, when I run <code>devtools::check()</code>, it  seems I need to document the functions that are NOT exported, i.e. those that may be called by a function which is exported, but which are not available nor needed by whoever uses the package. Here is an example from the output of <code>devtools::check()</code>:</p>

<pre><code>checking Rd \usage sections ... WARNING
Undocumented arguments in documentation object 'calculate_agreement'
  ‘a_assign_star’ ‘a_assign’
</code></pre>

<p>Do I need to document those arguments although the function is not exported?</p>
