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+TODO label description
+======================
+
+LMAXVAR - besides to int, the function should support an iterable for the lMax argument or similar, and
+          in such case the output should have the according additional dimension. In the end, I want
+          to support systems where different nanoparticles have different lMax.
+
+VECTORIZE - add support to process more than one element at once, in general.