-This syntax implicitly calls C<case-sensitive-path> (q.v.) so it also
-handles case insensitivity like Windows would. This only works in
-argument positions that expect a path.
+The parameter is rewritten "behind the scenes" by looking up the
+position where the drive is mounted, prepending that to the path,
+changing all backslash characters to forward slash, then resolving the
+result using L</case-sensitive-path>. For example if the E: drive
+was mounted on C</e> then the parameter might be rewritten like this:
+
+ win:e:\foo\bar => /e/FOO/bar
+
+This only works in argument positions that expect a path.