Airmail paper: Light-weight, high grade writing papers invariably made from rag for strength. One of the common usages is for aerogramme.

空邮纸：轻身高级书写用纸，多用破布造成，质地结实。常用作航空邮柬。

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Money was invested, offices opened at home and abroad, award-winning journalists hired and sections added until the former light-weight rag had grown so hefty that doorsteps trembled at its descent.

ECONOMIST: Otis Chandler

Candelabrums light the rooms and rag rugs cover the squeaky wooden floors.

BBC: Island hopping in Finland

She didn't stop performing until she was 72 and choreographed one of her rare light-hearted works, Maple Leaf Rag, just a year before her death.

NPR: Martha Graham Dancers Return to the Stage