/*
** WEBPAGE: help
** URL: /help?name=CMD
**
** Show the built-in help text for CMD.  CMD can be a command-line interface
** command or a page name from the web interface or a setting.
** Query parameters:
**
**    name=CMD        Show help for CMD where CMD is a command name or
**                    webpage name or setting name.
**
**    plaintext       Show the help within <pre>...</pre>, as if it were
**                    displayed using the "fossil help" command.
**
**    raw             Show the raw help text without any formatting.
**                    (Used for debugging.)
*/
void help_page(void){
  const char *zCmd = P("cmd");

  if( zCmd==0 ) zCmd = P("name");
  if( zCmd && *zCmd ){
    int rc;

    if( rc==1 ){
      @ unknown command: %h(zCmd)
    }else if( rc==2 ){
      @ ambiguous command prefix: %h(zCmd)
    }else{
      if( pCmd->zHelp[0]==0 ){
        @ No help available for "%h(pCmd->zName)"
      }else if( P("plaintext") ){
        Blob txt;
        blob_init(&txt, 0, 0);
        help_to_text(pCmd->zHelp, &txt);
        @ <pre class="helpPage">
        @ %h(blob_str(&txt))
        @ </pre>
        blob_reset(&txt);
      }else if( P("raw") ){
        @ <pre class="helpPage">
        @ %h(pCmd->zHelp)
        @ </pre>
      }else{
        @ <div class="helpPage">
        help_to_html(pCmd->zHelp, cgi_output_blob());
        @ </div>
      }
    }
  }else{