Here is a list of all documented namespaces with brief descriptions:

[detail level 12]

Ndetail_exported
▼Ndocopt
CArgument
CBranchPattern
CCommand
CDict
CDocoptExit
CDocoptLanguageError
CEither
CLeafPattern
COneOrMore
COption
COptional
COptionsShortcut
CPattern
CRequired
CTokens
▼Nmanage
CGit
CRunner
▼Nmgutility	Checks for MSVC compiler version
Ccustom_enum	Provides the custom names map for an enumeration type
Ccustom_enum< color >
Ccustom_enum< Position >
Cenum_for_each	A class template for iterating over enum values
Cenum_name_buffer	Provides the name buffer size for an enumeration type
Cenum_range	Provides the range for an enumeration type
Cenum_range< color >
Cenum_range< Position >
Cpair