<span class="op">(</span></span>
<span>  <span class="va">x</span>,</span>
<span>  ycrs <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  x.crs <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  nolonglat <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  checkonly <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  crs.default <span class="op">=</span> <span class="cn">NULL</span></span>
<span><span class="op">)</span></span>