** WEBPAGE: help
** URL: /help?cmd=CMD
*/
void help_page(void){
    const char * zCmd = P("cmd");
    
    style_header("Command line help %s%s",zCmd?" - ":"",zCmd?zCmd:"");
    if( zCmd  && zCmd[0] ){
      int rc, idx;

      rc = name_search(zCmd, aCommand, count(aCommand), &idx);
      if( rc==1 ){

        @ <h1>unknown command: %s(zCmd)</h1>
      }else if( rc==2 ){

        @ <h1>ambiguous command prefix: %s(zCmd)</h1>
      }else{
        char *zSrc, *zDest;
        int src,dest,len;

        @ <h1>%s(aCommand[idx].zName)</h1>
        zSrc = (char*)aCmdHelp[idx];
        if( zSrc==0 || *zSrc==0 ){

              zDest[dest++]='=';
              start = src+1;
              for( src=start; zSrc[src] && zSrc[src]!='<'; ){
                zDest[dest++]=zSrc[src++]; /* command name */
              }
              zDest[dest++]='"';
              zDest[dest++]='>';
              zDest[dest++]='"';
              for( src=start; zSrc[src] && zSrc[src]!='<'; ){
                zDest[dest++]=zSrc[src++]; /* command name */
              }
              zDest[dest++]='"';
            }else{
              zDest[dest++] = zSrc[src++];
            }
          }
          zDest[dest] = 0;
          @ <pre>%s(zDest)</pre>
          free(zDest);


          @ <hr>additional information may be found in the web documentation:
          @ <a href="http://www.fossil-scm.org/fossil/doc/tip/www/cmd_%s(aCommand[idx].zName).wiki">
          @ cmd_%s(aCommand[idx].zName)</a>, 
        }
      }
      @ see also the list of
      @ <a href="help">available commands</a> in fossil
      @ version %s(MANIFEST_VERSION" "MANIFEST_DATE) UTC
    }else{
      int nCol, nRow, i, tests, cnt;

      for( i=0,tests=0; i<count(aCommand); i++){
        if( strncmp(aCommand[i].zName,"test",4)==0 ) tests++;