This

%%tabbedSection
%%tab-First
This is the first tab
%%
%%tab-SecondTab
This is the second tab
%%
%%tab-ThirdTab
This is the third tab
%%
%%

produces this

Notes#

• I've only stumbled on tabbedSection; is it actually described somewhere in this wiki? Have I just missed all this time?
• the tab-[tabname] should be unique in the page or you get odd tab operation issues.
• CamelCase tabnames properly space themselves