About rules and new version hash

[kpeno]

Hello, sorry for my very Bad English ) i have question about standart types rules files in hashcat ) a) which of them are contained within each other? or there is a combination of all different from each other?
b) Plan to add support for new types of hashes for hashcat gui? md5(md5($pass).$salt) or another

[mastercracker]

Hello, sorry for my very Bad English ) i have question about standart types rules files in hashcat ) a) which of them are contained within each other? or there is a combination of all different from each other?
b) Plan to add support for new types of hashes for hashcat gui? md5(md5($pass).$salt) or another

For a) it's definitely not clear but read this: http://hashcat.net/wiki/doku.php?id=rule_based_attack

For b) Use -m 2611 for 3 character salt and -m 2711 for 30 character salt in Hashcat. From the posts I read, the GUI version seems often to be outdated so maybe not the best choice.