To maximize comfort and safety during warm weather, the House Boy may be instructed to properly wear a Mesh Shirt as part of a Standard Clothing two-piece top-and-bottom while away from home, and may be instructed to wear only a Mesh Shirt (without shorts or pants) at home or another location where full nudity is otherwise permitted.

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[The 2019 master version was not found online]

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Rule 111H-M — Mesh Shirt 
Classified: Minimal Clothing Examples and Protocols