- reflect(RootSystem,BasicList,Root) -- apply to a root several reflections with respect to simple roots
- reflect(RootSystem,BasicList,Weight) -- apply to a weight several reflections with respect to roots
- reflect(RootSystem,ZZ,Root) -- apply to a root the reflection with respect to a simple root
- reflect(RootSystem,ZZ,Weight) -- apply to a weight the reflection with respect to a root

The object reflect is a method function.