Hi Yan Libin<br><br>The &quot;#&quot; sign defines a preprocessing option.  This means that the option is either identified during compilation or identified when run through the cpp command.  For example, on the compilation line if you wanted to select MPP1 (meaning parallel) you would have something like &quot;ifort -c -convert big_endian -DMPP1 bdyin.F&quot;.  RegCM however uses cpp command which converts *.F to *.f during MAKECODE.  If you are running parallel, you should see all the &quot;#&quot; symbols have been removed in the *.f because cpp has selected the appropriate condition.  Hope this helps.<br>

<br>-Ahmed<br>
------------------------------------------------------<br><div id=":29m" class="ii gt">
Ahmed Tawfik<br>
PhD Candidate<br>
Department of Atmospheric Oceanic and Space Science<br>
University of Michigan<br>
(734) 936-0511<br>
-------------------------------------------------------</div><br><br><div class="gmail_quote">2009/10/9 Yan Libin <span dir="ltr">&lt;<a href="mailto:zjuyanlibin@163.com" target="_blank">zjuyanlibin@163.com</a>&gt;</span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">






<div style="margin: 10px; font-family: verdana; font-size: 10pt;">
<div>Hi, Dear regcmers,</div>
<div> </div>
<div style="text-indent: 2em;">In following codes, c means commentary, can anyone 
tell me what does # mean?</div>
<div style="text-indent: 2em;">Thank you in advance.</div>
<div> </div>
<div>
<div>c  * for sea, sea-ice veg albedos are not set                        *</div>
<div>c  *               these albedos are not treated as arrays here      *</div>
<div>c  *                                                                 *</div>
<div>c  * (depuv/10.0)= the ratio of upper soil layer to total            *</div>
<div>c  *               root depth; used to compute &quot;wet&quot; for soil albedo *</div>
<div>c  *    solour        =  soil albedo for different coloured soils    *</div>
<div>c*********************************************************************</div>
<div>c</div>
<div>#ifdef MPP1</div>
<div>      include &#39;regcm.param2&#39;</div>
<div>#else </div>
<div>      include &#39;regcm.param&#39;</div>
<div>#endif</div>
<div>      include &#39;parame&#39;</div>
<div>      </div>
<div>      include &#39;Commons/param1.cb&#39;</div>
<div>      include &#39;Commons/param3.cb&#39;</div>
<div>#ifdef MPP1</div>
<div>      include &#39;Common2/main.cb&#39;</div>
<div>      include &#39;Common2/cvaria.cb&#39;</div>
<div>      include &#39;Common2/bats.cb2&#39;</div></div>
<div> </div>
<div>Best regards,</div>
<div>Libin Yan</div></div>
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