* the JOB_RELOAD_OR_START, which lies outside the lookup function's domain),
* the following properties hold:
*
- * Merging is associative! A merged with B merged with C is the same as
- * A merged with C merged with B.
+ * Merging is associative! A merged with B, and then merged with C is the same
+ * as A merged with the result of B merged with C.
*
* Mergeability is transitive! If A can be merged with B and B with C then
* A also with C.