From c7e03a32b32ba981dca5460d905be8da8972a0e2 Mon Sep 17 00:00:00 2001
From: Robert Griesemer x and thus has no run-time cost.
-Specific rules apply to conversions where T is a numeric or string type.
+Specific rules apply to conversions where T is a
+numeric or string type, or where x is of string type.
These conversions may change the representation of a value and incur a run-time cost.