Here is a list of all files with brief descriptions:

apiCAEP.cxx
apiCAEP.h	Pointwise CAE Plugin API (CAEP-API)
apiCAEPUtils.cxx
apiCAEPUtils.h	CAEP utilities
apiGRDP.cxx
apiGRDP.h	Pointwise Grid Import Plugin API (GRDP-API)
apiGRDPUtils.cxx
apiGRDPUtils.h	GRDP utilities
apiGridModel.cxx
apiGridModel.h	Pointwise Grid Model API Specification (PWGM-API)
apiPWP.cxx
apiPWP.h	Pointwise Plugin API (PWP-API)
apiPWPUtils.cxx
apiPWPUtils.h	Data and functions useful to PWP-API compliant plugins
apiUtils.h	Base plugin utilities
CaeGridModel.cxx
CaeGridModel.h
CaePlugin.h
CaePluginImpl.h
CaeStrBlock.h
CaeStrBoundary.h
CaeStrBoundaryGroup.h
CaeStrConnection.h
CaeStrConnectionGroup.h
CaeStrGridModel.cxx
CaeStrGridModel.h
CaeUnsBlock.h
CaeUnsElement.h
CaeUnsElementGroup.h
CaeUnsGridModel.cxx
CaeUnsGridModel.h
CaeUnsPatch.h
CaeUnsVertex.h
pluginRegistry.h	Local Site Plugin Registry File
PwpAnchoredFileValue.h
PwpCwd.cxx
PwpCwd.h
PwpFile.cxx
PwpFile.h
PwpFileWriter.h
pwpPlatform.cxx
pwpPlatform.h	Cross Platform Functions
rtCaepInitItems.h	Static Initialization Data for the CAEP_RTITEM Array
rtCaepInstanceData.h	Customizes the typedef CAEP_RTITEM declaration
rtCaepSupportData.h	Defines Support Data for the CAEP_RTITEM Array
rtGrdpInitItems.h	Static Initialization Data for the GRDP_RTITEM Array
rtGrdpInstanceData.h	Customizes the typedef GRDP_RTITEM declaration
rtPwpInitItems.h	Static Initialization Data for the PWU_RTITEM Array
rtPwpPluginInfo.h	Static Initialization Data for the PWP_PLUGININFO structure
rtPwpVersions.h	Defines Implementation Version Information
runtimeReadGrid.h
cppstr/runtimeWrite.cxx
cppuns/runtimeWrite.cxx
cstr/runtimeWrite.cxx
cuns/runtimeWrite.cxx
runtimeWrite.h
site.h	Site Build Configuration Settings