XSD string pattern

Today I have come across a generated piece of XSD definition and it's restricted with a specific pattern

(0[4-9])|(1[0-9])|(2[0-6])

It puzzled me for a little time, and found the answer after little bit of testing.   What it means is any value within 04 - 26 is a valid value.

(0[4-9])    Any digit between 4 to 9 prefixed by zero
|  or
(1[0-9])    Any digit between 0 to 9 prefixed by one
| or
(2[0-6])    Any digit between 0 to 6 prefixed by two

IBM Business Process Manager Security Concepts & Guidance ... interesting read

While reading the red book from IBM ...
http://www.redbooks.ibm.com/redbooks/pdfs/sg248027.pdf

On page 49 " the cacerts file which ships with Business Process Manager has the Java-defined default password—“change it”. Ironically, even though the default password is “change it”, few ever do."

So if you are an administrator of a BPM, change it...