searchFore_btn.setMargin( btn_insets );
searchFore_btn.setToolTipText( "Search Forward in time" );
searchFore_btn.setMnemonic( KeyEvent.VK_F );
// searchFore_btn.setPreferredSize( btn_dim );
searchFore_btn.addActionListener(
new ActionSearchForward( this, canvas_vport ) );
super.add( searchFore_btn );
super.addSeparator();
super.addSeparator();