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

[detail level 1234]

▼Nplanner
▼Nencoder
CEncoder
CEncoderOMT
CEncoderSMT
▼Nmodifier
CLinearModifier
CModifier
CParallelModifier
▼Nplan
CPlan
▼Nsearch
CSearch
CSearchOMT
CSearchSMT
▼Ntranslate
▼Nbuild_model
CBuildRule
CJoinRule
CLeafGenerator
CMatchGenerator
CProductRule
CProjectRule
CQueue
CUnifier
▼Nconstraints
CAssignment
CConstraintSystem
CNegativeClause
▼Nfact_groups
CGroupCoverQueue
▼Ngraph
CGraph
▼Ngreedy_join
CCostMatrix
COccurrencesTracker
CResultList
▼Ninvariant_finder
CBalanceChecker
▼Ninvariants
CInvariant
CInvariantPart
CSafeInvariant
CUnsafeInvariant
▼Nnormalize
CAxiomConditionProxy
CConditionProxy
CEffectConditionProxy
CGoalConditionProxy
CPreconditionProxy
▼Npddl
►Nactions
CAction
CDurativeAction
CPropositionalAction
CPropositionalDurativeAction
►Naxioms
CAxiom
CNumericAxiom
CPropositionalAxiom
CPropositionalNumericAxiom
►Nconditions
CAtom
CCondition
CConjunction
CConstantCondition
CDisjunction
CExistentialCondition
CFalsity
CFunctionComparison
CFunctionTerm
CImpossible
CJunctorCondition
CLiteral
CNegatedAtom
CNegatedFunctionComparison
CObjectTerm
CQuantifiedCondition
CTerm
CTruth
CUniversalCondition
CVariable
►Neffects
CConditionalEffect
CConjunctiveEffect
CEffect
CObjectFunctionAssignment
CTmpEffect
CUniversalEffect
►Nf_expression
CAdditiveInverse
CArithmeticExpression
CAssign
CDecrease
CDifference
CDurationVariable
CFunctionalExpression
CFunctionAssignment
CIncrease
CNumericConstant
CPrimitiveNumericExpression
CProduct
CQuotient
CScaleDown
CScaleUp
CSum
►Nfunctions
CFunction
►Ngraph
CGraph
►Nparser
CParseError
►Npddl_types
CType
CTypedObject
►Npredicates
CPredicate
►Ntasks
CDerivedFunctionAdministrator
CRequirements
CTask
▼Npddl_to_prolog
CFact
CPrologProgram
CRule
▼Nsas_tasks
CSASAssignmentEffect
CSASAxiom
CSASCompareAxiom
CSASDuration
CSASGoal
CSASInit
CSASNumericAxiom
CSASOperator
CSASTask
CSASTemporalOperator
CSASVariables
▼Nsimplify
CDoesNothing
CDomainTransitionGraph
CImpossible
CVarValueRenaming
▼Ntimers
CTimer