//
// On some systems the monotonic clock will stop if the computer goes to sleep.
// On such a system, t.Sub(u) may not accurately reflect the actual
-// time that passed between t and u.
+// time that passed between t and u. The same applies to other functions and
+// methods that subtract times, such as [Since], [Until], [Before], [After],
+// [Add], [Sub], [Equal] and [Compare]. In some cases, you may need to strip
+// the monotonic clock to get accurate results.
//
// Because the monotonic clock reading has no meaning outside
// the current process, the serialized forms generated by t.GobEncode,