Catalog names are required selections; typing searches existing exercises. Sets, reps, weight and rest edit directly. Tab or blur saves; Escape restores a draft. Weight keeps its unit. Options holds special target types and units. Labels and observations are optional. Grey history is read-only. Dashed actual inputs are unconfirmed drafts; only Confirm & record creates evidence. Tab moves between inputs; Enter / Tab commits catalog and notes; Escape discards that cell draft. Alt + ↑ / ↓ reorders within a group. Grouping previews exact rows and participation, preserving unequal counts. Use Undo immediately after an operation. Results are recorded, not independently verified.