How to close a leaf in Fossil

The documentation on branching in Fossil SCM says a leaf is considered closed if it has a closed tag. However, when I enter

> fossil tag add closed xxxxx
> fossil leaves --closed
>

it doesn't show anything as closed. The same thing happens if 开发者_StackOverflow中文版I add the tag with --propagate. When I check closed leaves of Fossil itself, the leaves listed have no closed tags displayed. What am I misunderstanding?

Use fossil tag add --raw closed check-in

Another way to do it is start the user interface, go to check-in details and edit its properties (mark as closed)