In this.me your “sentence” is not a linear string. It’s a sequence of entrances into spaces.

it’s a context → space → navigation language.
You “enter spaces” (by establishing context) and then you navigate inside them.

So the ordering rule is:
• Context moves (like @, _, ~) are like changing coordinate frames / entering encrypted subspaces.
• Once you’re inside a frame, navigation is meaningful and can be non-linear (set-like / compositional).

Formal-ish mental model

Think of ME as a contextual algebra:
State: short-term memory (STM), indexes, encryptedBranches, localSecrets/localNoises, runtime frames
Context: the current “frame” (identity focus, effectiveSecret, current pointer target, etc.)
Navigation: path composition under the current context.

Operator categories

You can group operators by what kind of context they construct:

Identity/context focus operators
@ focuses identity references (may be many within expressions)
Produces/updates an identity frame without necessarily persisting anything

Secret / privacy frame operators
_ establishes/loads a secret-derived frame (effectiveSecret)
Doesn’t have to be identity-specific; it’s a general “encryption lens”

Noise / re-root operators
~ resets inheritance / creates a new root for subsequent secret derivations

Pointer / alias frame operators
__ or -> creates a symbolic link frame (binds __ptr)

Derivation operators
= defines derived values under the current context (may be lazily evaluated)

Query/collection operators
? yields a picker/collector function under the current context
Removal operators

• tombstones/removes a value under the current context

What to bake into the axioms

@ creates an identity-focus Thought and updates the active identity frame.

_ creates/loads a secret frame and makes selected roots stealth.

**~ **changes effectiveSecret lineage.

__ binds pointer frame and makes __ptr.* derivations meaningful.

Axioms should be structure + frame invariants, not app-policy validation.