Definition
A49: “Define the pragmatic frame as a parameterized family of admissible contexts: c_f = Γ(f, c_0), where Γ realizes a pragmatic frame f relative to a background context c_0.” The induced response distribution is Q_(θ,f,u)(y) = P_θ(y | Γ(f, c_0), u). A pragmatic realization is r = (u, f, θ).
What it is not
Not the prompt itself (A43), and not the tuple (S, A, K, N, G, H) of A48 §3.1 (TERM-030). The frame is an abstract index, and Γ says how it is realized in a given context. It is the owner’s U17 phrase, “functionally a parameterized frame” (CLAIM-029), made into a definition. It was dropped silently at A52, which went back to the tuple and “experimentally manipulable contexts”.