-in"><span><span class="st">   #' Add a 'a' value defined separately to a b value made available</span></span></span>
<span class="r-in"><span><span class="st">   #' in environment</span></span></span>
<span class="r-in"><span><span class="st">   #' </span></span></span>
<span class="r-in"><span><span class="st">   #' </span></span></span>
<span class="r-in"><span><span class="st">   #' @return b + a</span></span></span>
<span class="r-in"><span><span class="st">   #' </span></span></span>
<span class="r-in