Template:ImpossibleAction/doc
From Fallen London Wiki
This template is used for the select few actions which are impossible to complete (either because they need Impossible!, or otherwise). It works the exact same as Template:Action except that the result is automatically generated (so |Success summary, |Success description , and |Success Instructions won't work).
For actions which have become impossible, but with known Success text due to formerly being available, use Template:Action and set Category:Impossible Actions manually.