FitNesse. UserGuide. FitLibraryUserGuide.
SetFixture [add child]
SetFixture tables look almost the same as RowFixture tables. The only difference is that the header labels of SetFixture tables can contain any characters, such as "$".

StartListing
list is 1,2,3

set
item
3
1
2
row list
item
3
1
2
So why bother having SetFixture? There are several differences that affect the fixture code, as we see in WritingListFixtures.