title: what is variable of this line of code and how to find the value?
body: <p>I am recently working on a project that needs to change this select function written in HTML. Inside of this, I find trouble to find these variables which named {L_PLSCHOKIND}, {V_SELECTED} and {V_MAINNAME}. I believe the other programme has put these variables into SQL code somewhere. Could you someone explain why these variables in {} and how this select tag get the value of the valuables. Thank you.</p>
  
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  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;FONT COLOR="#3D3D3D" ID="dfont10"&gt;&lt;B&gt;{L_CATEGORY}&lt;/B&gt; : &lt;/FONT&gt;
    &lt;!-- &lt;FONT COLOR="#800000" ID="dfont10"&gt; &lt;B&gt;{V_MAINKIND}&lt;/B&gt;&lt;/FONT&gt;&lt;BR&gt; --&gt;
       &lt;SELECT name="PJ" STYLE="font-size:9pt" onChange="location.href=this.options[this.selectedIndex].value;"&gt;
     &lt;OPTION VALUE="main.php?{V_PHPSESSID0}"&gt; {L_PLSCHOKIND} 
     &lt;!-- BEGIN SHOW_OPTION1 --&gt;
     &lt;OPTION VALUE="main.php?T_PP[pdmain]={V_PDMAIN}&amp;{V_PHPSESSID1}" {V_SELECTED}&gt; {V_MAINNAME}
     &lt;!-- END SHOW_OPTION1 --&gt;
       &lt;/SELECT&gt; </code></pre>
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