$ ./xi3 --help
USAGE
./xi3 init-file
where init-file is a SCM file (default: xi3.scm)
Parameters in the init-file:
version : "F", "FT", or "FTS"
flag-mat : #t for matrix-scheme
: #f for atimes-scheme
flag-notbl : calculation scheme for the ewald-summation
: #t for no-table
: #f for with table
lattice : dimensions of the periodic box (list or vector of length 3)
ewald-eps : tolerance value for ewald-summation cut-off
np : number of particles
x : particle configuration (list or vector with length 3*np)
ewald-trs : (optional) list of ewald_tr parameters
: (list or vector with any length)