Shared Health Services Notation Conventions ASCII notation is normative. Unicode notation is informative. Both encodings produce identical semantic output. The choice of representation does not alter meaning -- it demonstrates the protocol's encoding independence. This is not a modern innovation. The protocol formalizes patterns that have emerged independently across human communication systems for 60,000 years: Aboriginal songlines, medical notation (Rx), ham radio Q-codes (QTH), maritime signals (SOS), and internet shorthand (1337, TL;DR). This document specifies Tyndale, an application-layer semantic addressing protocol. Where traditional compression transmits reduced content (M -> C -> M), Tyndale transmits coordinates that the receiver expands locally (M -> A, Σ(A) -> M'). The receiver's substrate already contains the meaning; transmission provides location, not payload. The selection formula tau = (M / S) x R x G optimizes for meaning preserved per signal spent (M/S), resilience across expression systems (R), and cognitive alignment with receiver processing (G). Bandwidth-constrained environments -- disaster response networks, degraded infrastructure, deep space communications -- require semantic transmission under conditions where traditional compression fails. When every bit costs power, time, or lives, communication systems need a different primitive. Taft's teletype (1909). Voyager 1 (160 bps @ 15 billion miles). iPhone. Same protocol. Tyndale is to natural language what DNS is to IP addresses. The mathematics describes how meaning moves.