Namespaces in MediaWiki software let us organize different kinds of content on Appropedia.

The namespaces used on Appropedia are numbered in the MediaWiki software - these numbers are sometimes important in tech work, e.g. when doing certain operations with a bot. The numbers are:

• 0 Main
• 1 Talk
• 2 User
• 3 User talk
• 4 Appropedia
• 5 Appropedia talk
• 6 File
• 7 File talk
• 8 MediaWiki
• 9 MediaWiki talk
• 10 Template
• 11 Template talk
• 12 Help
• 13 Help talk
• 14 Category
• 15 Category talk
• 100 Portal
• 101 Portal talk
• 102 Original
• 103 Original talk
• 106 Property
• 107 Property talk
• 110 Form
• 111 Form talk
• 112 Concept
• 113 Concept talk
• 170 Filter
• 171 Filter talk
• 274 Widget
• 275 Widget talk
• 284 Book
• 285 Book talk
• 420 Layer
• 421 Layer talk

Source

The up-to-date list of namespaces can be extracted at any time from namespaces.