- * representation label (an unsigned integer) is used to distinguish
- * elements from different Lie algebra representations (only objects with
- * the same label "interact" with each other). These objects implement an
- * abstract representation of the group, not a specific matrix
- * representation. The indices used for color objects should not have a
- * variance. */
+ * representation label (an unsigned 8-bit integer) is used to distinguish
+ * elements from different Lie algebras (objects with different labels
+ * commute). These objects implement an abstract representation of the
+ * group, not a specific matrix representation. The indices used for color
+ * objects should not have a variance. */