class="r-pr">#&gt;</span> [Cache size for raster rows]</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Flags:</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   name: a [Do not align the current region to the raster elevation map] {FALSE}</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   name: e [Compute output at edges and near NULL values] {FALSE}</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   name: n [Default: degrees counter-clockwise from East, 