From f471d61d0b76aba27154a9a738e73271d03ec040 Mon Sep 17 00:00:00 2001
From: joaquintides std::list
; nearly every operation
provided in the standard container is replicated here, occasionally with changes
in the syntax and/or semantics to cope with the constraints imposed by
Boost.MultiIndex. An important difference, commented above,
-is the fact that sequenced index iterators are constant:
+is the fact that the values pointed to by sequenced index iterators are treated
+as constant: