TEST-ONLY (R2-A Task 1 seam, kept until T2's public getPlanChart() supersedes it): read back a tooth's state from the PLAN chart regardless of which chart is currently active. Not part of the public API.
TEST-ONLY (R2-A Task 1 seam, kept until T2's public getPlanChart() supersedes it): read back a tooth's state from the PLAN chart regardless of which chart is currently active. Not part of the public API.