Conciseness

The body is lean and assumes competence (no concept explanations, no padding), but the 'Action Format' section largely duplicates commands already given in the Workflow ('go to microwave 1', 'open microwave 1', 'heat {object} with {appliance}'), which is a minor instance of redundancy that could be trimmed — anchor 4, not 5.

Actionability

Fully executable commands with placeholder syntax ('heat {object} with {appliance}'), concrete instances ('heat potato 1 with microwave 1'), and a complete worked example including expected observations — copy-paste ready and covering the common cases, matching anchor 5.

Workflow Clarity

The four-step sequence includes explicit validation checkpoints ('verify observation confirms it is now open', 'verify observation confirms "You heat the {object}"') and a dedicated Error Recovery section with feedback loops ('Nothing happened' → check three conditions; appliance occupied → remove item, retry), matching anchor 5. The operation is neither destructive nor batch, so no cap applies.

Progressive Disclosure

The body itself is under 50 lines and well-sectioned, but the bundle contains references/trajectory_breakdown.md — which holds useful pitfalls (premature closing, inventory requirements) — and the body never references or links to it, leaving that content undiscoverable. Per the rubric's bundle-structure guideline this matches anchor 3 ('references present but not clearly signaled'), not 5.

Specificity

Concrete actions are named ('Heats a specified object using an available heating appliance', 'navigate to and operate the heating appliance') with example appliances, which fits anchor 4 — but the rubric's explicit penalty for second-person voice ('Use when you are holding an object', 'you need to navigate') reduces the base of 4 by 1.

Completeness

Clearly answers both: what ('Heats a specified object using an available heating appliance (e.g., microwave, stoveburner)... results in the object being in a heated state') and when ('Use when you are holding an object that requires heating and need to navigate to and operate the heating appliance') with concrete trigger phrasing. Not 4 because the 'when' clause is fully explicit rather than merely adequate.

Trigger Term Quality

Good natural keyword coverage — 'heat/heating', 'microwave', 'stoveburner', 'holding an object that requires heating' — but common variations like 'warm up' or 'cook' are missing, matching anchor 4 rather than the comprehensive synonym coverage of anchor 5.

Distinctiveness Conflict Risk

Clear niche — heating a held object via a named appliance in an ALFWorld-style environment — with distinct trigger verbs ('heat') and no meaningful overlap with sibling skills like cooling or cleaning objects.