| I'm not sure about a separated categories for every Discuz VERSION. May be try to create categories by every PRODUCT NAME?
 I.e.
 
 CoddersClub - Announcements- Our products/services
 --- X How to... (Tips & Tricks)- ...Discuz! X - Discuz! X3 --- X3 only discussion
--- X3 Bug reports 
- Discuz! X2.5--- X2.5 only discussion--- X2.5  Bug reports
 - Discuz! X2 --- X2 only discussion- Common Discuz! X discussion (all versions)--- X2  Bug reports
 
 
 --- Thread Prefixes inside- Discuz! X Resources
 --- Templates (Version Prefixes inside)
 --- Modules (Version Prefixes inside) --- Plugins (Version Prefixes inside) --- Hacks (Version Prefixes inside) --- Images/Icons (Version Prefixes inside)--- Tools  (Version Prefixes inside) 
- Discuz! X International --- Arabic (العربية)
 --- Chinese (简体中文 / 繁體中文)
 --- German (Deutsch)
 --- English (English)
 --- French (Français)
 --- Korean (한국어)
 --- Polish (Polski)
 --- Russian (Русский)
 --- Spanish (Español)
 --- Thai (ภาษาไทย)
 --- Turkish (Türkçe)
 --- Vietnamese (Tiếng Việt)
 
 --- etc. 
- Discuz! X Miscellaneous--- X Wishlist
 --- X Success stories (Live sites)
 
 UCenter
 - UC General discussion
 - UC Bug reports
 
 UCHome
 - UCH General discussion
 - UCH Bug reports
 - UCH Resources (TOPIC'S TYPES: TEMPLATE and MODULE)
 
 Other engines
 - Blogs
 - CMS
 - E-commerce
 - Social Networking
 - Other scripts
 
 Off-Topic
 - Hydepark
 - Sandbox (for testing)
 
 
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