Here are the classes, structs, unions and interfaces with brief descriptions:

Nlsst
Ndaf
Nbase
NdateTime
NdateTimeContinued
CDateTime
NpropertyContainer
NpropertyContainerContinued
CReturnStyle
CPropertySet
CPropertyList
CDateTime	Class for handling dates/times, including MJD, UTC, and TAI
CPersistable	Base class for all persistable classes
CPropertyList	Class for storing ordered metadata with comments
CPropertySet	Class for storing generic metadata
Nstd	STL namespace
Chash< lsst::daf::base::DateTime >