truct stat="OK"]</li>   
  <li>[struct stat="ERROR", msg="Usage: mBgModel [-i niter] [-l(evel-only)] [-d level] [-r refimg] [-s statusfile] images.tbl fits.tbl corrections.tbl"]</li>   
  <li>[struct stat="ERROR", msg="Argument for -i (<i>string</i>) cannot be interpreted as an integer"]</li>   
  <li>[struct stat="ERROR", msg="Number of iterations too small (<i>niter</i>). This parameter is normally around 5000."]</li>   
  <li>[struct stat="ERROR", msg="Argument for -r (<i>string</i>) cannot be interprete