How to create static page?

You create your page as any other pages. To change your page as static page, you just only add an attribute 'Static' with value of 'true' for page xml element of your page configuration (*.pageconf file).

If you want to use parameter for your static page, you can utilize cache inside page configuration. There are some attributes related to cached page: Cache, CacheLifetime, and CacheKeys.

Here is for your example:

<?xml version="1.0" encoding="UTF-8"?>
 <page name="HelpFile" id="HelpFile" Cache="true" CacheLifetime="0" CacheKeys="fn::GetParam('context_id')" >
  <processor PageSecurityCode="Page|HelpFile" HelpContext="LIGHTARMY-Applications.HelpFile" 
   sOnlyTemplateFileName="HelpFile.html" CanPublic="true" Authenticate="false"
   ValidateSystemConfiguration="false" >
   
   <PageSecurityCode>
    <Name>Help File</Name>
    <Description></Description>
    <HelpContext>LIGHTARMY-Applications.HelpFile</HelpContext>
   </PageSecurityCode>
   
   <TemplateProcessingScript><![CDATA[
    CIISONLINE_HelpFile::HelpFile_Show();
   ]]></TemplateProcessingScript>
   
   <ResponseProcessingScript><![CDATA[
    CIISONLINE_HelpFile::HelpFile_Print();
   ]]></ResponseProcessingScript>
   
   <IncludeFile>PageClass/HelpFile.php</IncludeFile>
   
  </processor>
 </page>