For some reason, I cannot use the commands (show:), (hide:), (undo:), and possibly others. This extends to commands like (link-undo:). This is really crippling as these are very useful...
They are highlighted red, more like a syntax error than a semantic error. Twine doesn't recognize these commands and I'm sure my syntax is correct, once I even copy pasted the examples.
I am using Twine 2.2.1, freshly installed.