deletions | additions       diff --git a/Framework.tex b/Framework.tex  index 3b1fc36..f25e7c2 100644  --- a/Framework.tex  +++ b/Framework.tex 
...
\label{interface}  \code{gadfly} is designed for use with simulation data stored in the HDF5 format, with file access provided by \code{h5py}.   While we aim to keep \code{gadfly} as general as possible, some assumptions about the storage format are necessary.  Each particle type is expected to be contained in a different HDF5 group, labeled \code{PartType0, PartType1}, etc. An additional group, \code{Header}, etc; a \code{Header} group  is also expected, containing metadata for the simulation snapshot as HDF5 attributes. All particle types particles  are expected to contain have the following fields defined: particle IDs, masses, coordinates, and velocities. SPH particles  \subsection{Organizational Structure}  \label{hierarchy}