VDS Renaissance 的界面提供多种语言。官方文档以英语维护，以确保提供统一、一致且始终最新的参考。
@LEN
Windows ✓Linux ✓macOS ⏳
Syntax
@LEN(<string>)Description
This function returns the length of <string> in characters. The value 0 is returned if the string is empty.
OK
Unchanged.
Example
%L = @LEN(%A)