Rewriting only part of the URI

so what the string range is doing is taking all the content immediately after /newsletters/directory2. The string first is finding the appropriate start index for the string range by looking for the first "/" in HTTP::uri AFTER the first 13 characters. So this could be /newsletters/ or anything else that was 13 characters long. If it was going to be dynamic in length, then you would want to utilize URI::path and string length as part of the equation, then you wouldn't need to specify newsletter/directory2 at all. Fun stuff!