The executable bsp reads its input from a file called bsp.in
run> bsp ./bsp.in
Input contains the name 
Files 
bsp.c - main file
pdb_score.c  - calculates score for patches
bsp_mc.c     - optimizes patch according to score
bsp_lig.c    - Read ligand and store in a patch like format
pdb.c
pdb_atom_aux.c - routines to parse pdb file 
pdb_atom.c     - routines to parse pdb files and store as a sequence of atoms
pdb_io.c - pdb input output
pdb_res.c - atoms -> residue
pdb_ss.c - read sequence
seq.c    -
