Long options start with two dashes followed by one or more characters.
Phosphate is a stencil-style font where many characters reduce to simple geometric forms. Copperplate is all-caps, eliminating case-based distinctions between scripts. These are the fonts where confusable pairs converge.
，推荐阅读爱思助手下载最新版本获取更多信息
Up to 10 simultaneous connections
Discard old data: evict what's already buffered to make room