There are some nice references for OpenType features, but they are written at a high-level, or in .fea(?) format:
广州设立“即买即退”集中退付点、天津推出“津城中医之旅”、重庆引入多个国际品牌首店……多地推出创新举措，助推入境消费火起来。。关于这个话题，新收录的资料提供了深入分析
Omit - R for side-effect-only functions。关于这个话题，新收录的资料提供了深入分析
Detection Is Not Protection: What Azure WAF Detection Mode Actually Does (and Doesn't)March 3, 2026，更多细节参见新收录的资料