Here is a list of all files with brief descriptions:

[detail level 12]

▼ src
ApplicationLauncher.cs
AtmosphericEngine.cs
AttachNode.cs
AvailablePart.cs
BaseAction.cs
BaseActionList.cs
BinaryReader.cs
BinaryWriter.cs
CelestialBody.cs
ConfigNode.cs
ControlTypes.cs
Decoupler.cs
DecouplerGUI.cs
DiscoverableObjectUtil.cs
DiscoveryInfo.cs
DiscoveryLevels.cs
DockingPort.cs
EditorLogic.cs
EventDataT.cs
EventDataTU.cs
EventDataTUV.cs
EventReport.cs
EventVoid.cs
File.cs
FileInfo.cs
FlightCamera.cs
FlightCtrlState.cs
FlightGlobals.cs
FlightInputHandler.cs
FloatCurve.cs
FuelLine.cs
FuelTank.cs
FuelTankGUI.cs
GameEvents.cs
GamePersistence.cs
GameScenes.cs
HighLogic.cs
IDiscoverable.cs
InputLockManager.cs
IOException.cs
IOUtils.cs
IScienceDataContainer.cs
KerbalEVA.cs
KerbalFSM.cs
KerbalInstructor.cs
KFSMEvent.cs
KFSMState.cs
Krakensbane.cs
KSPAction.cs
KSPAddon.cs
KSPAssembly.cs
KSPAssemblyDependency.cs
KSPEvent.cs
KSPField.cs
KSPScenario.cs
ManeuverNode.cs
MapView.cs
MemoryStream.cs
ModuleAsteroid.cs
ModuleEngines.cs
ModuleScienceExperiment.cs
Orbit.cs
Part.cs
PartModule.cs
PartResource.cs
PartResourceDefinition.cs
PartResourceLibrary.cs
PAsteroid.cs
PatchedConicSolver.cs
Planetarium.cs
PlanetariumCamera.cs
PluginConfigNode.cs
PluginConfiguration.cs
ProceduralAsteroid.cs
PSystem.cs
PSystemManager.cs
RDArchivesController.cs
ResourceFlowMode.cs
ScaledSpace.cs
ScenarioCreationOptions.cs
ScenarioDiscoverableObjects.cs
ScienceData.cs
ScienceExperiment.cs
ScienceSubject.cs
ScreenMessage.cs
ScreenMessages.cs
SeekOrigin.cs
ShipConstruct.cs
SpaceCenter.cs
Sun.cs
TextReader.cs
TextWriter.cs
TimeWarp.cs
TutorialScenario.cs
UntrackedObjectClass.cs
Vector3d.cs
Vessel.cs