Yog Script (.ys, .yns) analyzed: its lexer, parser and syntax tree, names resolved, the class index model — what the build and the editors read a source with.
namespace System;
/// An enum whose values are bits, combined (`Read | Write`): its text
/// names each bit set (`"Read, Write"`), as .NET's `FlagsAttribute`.
[AttributeUsage(AttributeTargets.Enum)]
public sealed class Flags : Attribute {}