See bug 100641 ->change function name of EFFECTIVE to EFFECT in help
in help is function Effective
function name should be EFFECT
User Profile Reset: No
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Same version to the same as the corresponding bug report for the UI.
Best regards. JBF
Confirmed of course.
Roman Kuznetsov committed a patch related to this issue.
It has been pushed to "master":
tdf#105848 Change EFFECTIVE function name to EFFECT