}
    assert( i<=count(az) );
  }
  if( i>2 ){
    style_submenu_multichoice("y", i/2, az, isDisabled);
  }
}

/*
** Add the select/option box to the timeline submenu that is used to
** set the ss= parameter that determines the viewing mode.
**
** Return the TIMELINE_* value appropriate for the view-style.
*/
int timeline_ss_submenu(void){
  static const char *azViewStyles[] = {
     "m", "Modern View",
     "c", "Compact View",
     "v", "Verbose View",
     "j", "Columnar View",
  };
  int tmFlags;
  cookie_link_parameter("ss","ss","m");
  style_submenu_multichoice("ss", 4, azViewStyles, 0);
  switch( PD("ss","m")[0] ){
    case 'c':  tmFlags = TIMELINE_COMPACT;  break;
    case 'v':  tmFlags = TIMELINE_VERBOSE;  break;
    case 'j':  tmFlags = TIMELINE_COLUMNAR; break;
    default:   tmFlags = TIMELINE_MODERN;   break;
  }    
  return tmFlags;
}

/*
** If the zChng string is not NULL, then it should be a comma-separated
** list of glob patterns for filenames.  Add an term to the WHERE clause
** for the SQL statement under construction that excludes any check-in that
** does not modify one or more files matching the globs.
*/

  int pd_rid;
  double rBefore, rAfter, rCirca;     /* Boundary times */
  const char *z;
  char *zOlderButton = 0;             /* URL for Older button at the bottom */
  char *zNewerButton = 0;             /* URL for Newer button at the top */
  int selectedRid = -9999999;         /* Show a highlight on this RID */
  int disableY = 0;                   /* Disable type selector on submenu */
  char cViewStyle;                    /* Overall style of the page */
  static const char *azViewStyles[] = {
     "m", "Modern View",
     "c", "Compact View",
     "v", "Verbose View",
     "j", "Columnar View",
  };

  /* Set number of rows to display */
  cookie_parse(DISPLAY_SETTINGS_COOKIE);
  cookie_read_parameter("n","n");
  z = P("n");
  if( z==0 ) z = db_get("timeline-default-length",0);
  if( z ){

    }
  }else{
    z = "50";
    nEntry = 50;
  }
  cgi_replace_query_parameter("n",z);
  cookie_write_parameter("n","n",0);
  cookie_link_parameter("ss","ss","n");
  cViewStyle = PD("ss","n")[0];
  style_submenu_multichoice("ss", 4, azViewStyles, 0);
  
  tmFlags |= timeline_ss_submenu();  

  /* To view the timeline, must have permission to read project data.
  */
  pd_rid = name_to_typed_rid(P("dp"),"ci");
  if( pd_rid ){
    p_rid = d_rid = pd_rid;
  }

  }
  if( (zTagSql && db_int(0,"SELECT count(*) "
      "FROM tagxref NATURAL JOIN tag WHERE %s",zTagSql/*safe-for-%s*/)<=nEntry)
  ){
    nEntry = -1;
    zCirca = 0;
  }
  switch( cViewStyle ){
    case 'c':  tmFlags |= TIMELINE_COMPACT;  break;
    case 'v':  tmFlags |= TIMELINE_VERBOSE;  break;
    case 'j':  tmFlags |= TIMELINE_COLUMNAR; break;
    default:   tmFlags |= TIMELINE_MODERN;   break;
  }    
  if( zType[0]=='a' ){
    tmFlags |= TIMELINE_BRIEF | TIMELINE_GRAPH;
  }else{
    tmFlags |= TIMELINE_GRAPH;
  }
  if( PB("ng") || zSearch!=0 ){
    tmFlags &= ~TIMELINE_GRAPH;