The AtomDB NoLine model is produced by removing all emission lines from spectra calculated by APEC, producing a continuum spectrum which can be used as the user see fits. The processes which are included in this spectrum are:
The data can be downloaded here: apec_v2.0.2_noline.tar.bz2 md5sum
To use these data in XSPEC or Sherpa, see the FAQ page. The appropriate root will now be:
/path/to/atomdb/atomdb_v2.0.2_noline