In 23.2.4 [associative.reqmts]'s table, the "a.insert(p, t)" row says:

"Effects: Inserts t if and only if there is no element with key equivalent to the key of t in containers with unique keys; always inserts t in containers with equivalent keys. always returns the iterator pointing to the element with key equivalent to the key of t. t is inserted as close as possible to the position just prior to p."

The second "always" begins a sentence and should therefore be capitalized.