1 Using Groups (svg:g)

     2 ====================

     3 

     4 

     5 Nesting widgets

     6 ---------------

     7 

     8 Side effects of optimization

     9 ----------------------------

    10 

    11 Detachable pages

    12 ^^^^^^^^^^^^^^^^

    13 

    14 Discardable elements

    15 ^^^^^^^^^^^^^^^^^^^^

    16