Thread:Adnoam/@comment-29582689-20170429175553/@comment-25219384-20170501075057

As far as I know these are legacy fields. Theoretically it can be used to query Action pages which originate specifically from storylets or from cards, but this is of dubious value and properly won't work since almost all new Action pages today only use the "From Card/Storylet title" field.

I have no idea how to write a bot to update all the old uses.