is it correct to
> conclude that the vtkWedge cell type is documented incorrectly, and that
> the current picture in the manuals should have nodes 1 and 2 swapped as
> well as 4 and 5 swapped?
Correct. This will be updated in the next version of the book.
2
/\
/ \
/ \
0-----1\
\ /\5
\ / \
\ / \
3------ 4
Mathieu