['In', 'the', 'realm', 'of', 'jacquard', 'weaving', ',', 'the', 'heel', 'rack', 'plays', 'a', 'crucial', 'role', '.', 'It', 'is', 'the', 'perforated', 'board', 'which', 'supports', 'the', 'ends', 'of', 'the', 'jacquard', 'needles', ',', 'ensuring', 'precise', 'control', 'over', 'the', 'weaving', 'process', '.', 'The', 'integration', 'of', 'the', 'heel', 'rack', 'into', 'the', 'jacquard', 'loom', 'design', 'revolutionized', 'textile', 'production', ',', 'allowing', 'for', 'intricate', 'patterns', 'to', 'be', 'woven', 'with', 'ease', '.', 'Modern', 'jacquard', 'machines', 'continue', 'to', 'utilize', 'heel', 'racks', 'to', 'maintain', 'the', 'efficiency', 'and', 'accuracy', 'that', 'the', 'early', 'inventors', 'envisioned', '.']
[[8, 9, 'Textile Machinery']]