I've got some further information to note :
in the ASCII character set 0x13 is HEX of 19
(dc3) 19 0023 0x13
I'll check out what the character set might be the problem, it's not cause I is Linux? :)
At the moment I am assuming I assume the [ ] are put in by code, or I need to delete / look for a rogue "vertices" or something that has been written as hex?