Here is a list of all files with brief descriptions:

[detail level 1234]

dune
grid-glue
adapter
gridglue.cc
gridglue.hh
gridglueamirawriter.hh	Write all remote intersections to a AmiraMesh file
gridgluecommunicate.hh	Describes the parallel communication interface class for Dune::GridGlue
gridgluevtkwriter.hh	Write all remote intersections to a vtk file for debugging
intersection.hh	Model of the Intersection concept provided by GridGlue
intersectionindexset.hh
intersectioniterator.hh	Implement iterators over GridGlue intersections
rangegenerators.hh
common
areawriter.hh
areawriter_impl.hh
crossproduct.hh
projection.hh
projection_impl.hh
projectionwriter.hh
projectionwriter_impl.hh
ringcomm.hh
extractors
codim0extractor.hh	Mesh grid extractor base class
codim1extractor.hh	Grid extractor class for codim 1 subgrids
extractor.hh	Extractor base class
vtksurfacewriter.hh	Helper class for graphical output of grids in generic representation
merging
computeintersection.cc
computeintersection.hh
conformingmerge.hh	Implementation of the Merger concept for conforming interfaces
contactmerge.cc
contactmerge.hh	Merge two grid boundary surfaces that may be a positive distance apart
intersectionlist.hh
merger.hh
overlappingmerge.cc
overlappingmerge.hh
simplexintersection.cc
standardmerge.cc
standardmerge.hh	Common base class for many merger implementations: produce pairs of entities that may intersect
gridglue.hh	Central component of the module implementing the coupling of two grids