IN, FHIAIMS (FHI-aims input files)

Coordinate reader	MDAnalysis.coordinates.FHIAIMS.FHIAIMSReader
Coordinate writer	MDAnalysis.coordinates.FHIAIMS.FHIAIMSWriter
Topology parser	MDAnalysis.topology.FHIAIMSParser.FHIAIMSParser

FHI-aims input files are similar to xyz in format. The specification is publicly available.