The first cell will be drawn at the top of the column, the final at the bottom.
The alignment is given in the first argument list. If none is given, nodes are
aligned to the center.
The horizontal struts are given in the second argument list, as optional
arguments following the cells argument. If only a single strut is given,
it is used for both the left and right side of the aligned part.
If two struts are given, the first is used for the left side and the second
for the right side.
Combine parts vertically.
The first cell will be drawn at the top of the column, the final at the bottom.
The alignment is given in the first argument list. If none is given, nodes are aligned to the center.
The horizontal struts are given in the second argument list, as optional arguments following the
cellsargument. If only a single strut is given, it is used for both the left and right side of the aligned part.If two struts are given, the first is used for the left side and the second for the right side.