That model of the Chipmunk is required to carry the approved Flight Manual.
Ah! That explains the dymo-taped notice on the instrument panel "Spin recovery may require full forward stick. See also flight manual". But would you have time to un-stow it (from where?) find the relevant page, and follow what it says, before the ground intervened.
There's barely stowage space for a bit of paper with one's radio frequencies scribbled on it in a Chippy, never mind somewhere to keep a flight manual! Even my chart had to be stuffed down the side of the seat cushion when not in use (stowed behind my back for aeros!).