Sections in a tiddler refer to all that which is enclosed in headings. Beware that sections do not entail subsections when being access programatically. Also note that a tiddlers end marks the end of the last section.

For example, assume a tiddler containing the following...
!Heading1
Some introductory text.
!!Heading2
Some more details.
Here, section Heading1 refers to all content that the section Heading1 contains. If you transclude its content vie the tiddler macro via <<tiddler Sections##Heading1>> you get the following result:



Likewise <<tiddler Sections##Heading2>> renders as:

Some more details.
bag
tiddlywiki_public
created
Sun, 15 Jan 2012 13:21:57 GMT
creator
tobibeer
modified
Sun, 15 Jan 2012 13:27:37 GMT
modifier
tobibeer