R = L#cache.lieRing
The ring $R$ is the internal polynomial ring representation of Lie elements, which can be obtained by writing L#cache.lieRing. The Lie monomials are represented as commutative monomials in this ring. The number of generators in lieRing is the number of generators in the Lie algebra times the internal counter L#cache.max, which initially is set to $5$, and is changed to $n+5$ if a computation is performed up to degree $n$ with $n\ > $ L#cache.max.
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