kd">::</span><span class="w"> </span><span class="n">xmax</span><span class="w"></span>
<span class="kt">real</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">xmax0</span><span class="w"></span>
<span class="kt">real</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">ymax</span><span class="w"></span>
<span class="kt">real</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n"