The !TracNav macro works:
[[TracNav(TocTest)]]
= The Sandbox =
This is just a page to practice and learn WikiFormatting.
[http://www.google.com/calendar/render?cid=7us0p706usl27tv9hb2ta61i84%40group.calendar.google.com CSTM Google Calendar]
This image macro works too: [[Image(http://www.google.com/calendar/images/ext/gc_button1_en.gif)]]
{{{
#!html
}}}
[[Image(http://www.google.com/calendar/images/ext/gc_button1_en.gif)]]
{{{
#!html
}}}
{{{
#!html
}}}
[[Image(http://www.google.com/calendar/images/ext/gc_button1_en.gif, nolink)]]
{{{
#!html
}}}