Help me apply TLA+ to the material below.
Reader and existing knowledge: [describe]
Task and desired outcome: [describe]
Use these principles: Define the relevant state and initial condition.; Describe allowed next-state actions.; State safety and liveness properties with the assumptions needed to assess them..
Preserve source facts, identifiers, quantities, conditions, exceptions, and uncertainty.
Separate supplied facts from assumptions. Ask for missing information instead of inventing it.
Explain your representation choices and provide a review checklist. Do not claim formal compliance or correctness from formatting alone.
Material: [paste only information you are permitted to share]