* set the environment variable LABNH to point at the file labnh.fit in this
  distribution

* WARNING: The original 21cm data of the LAB survey as downloaded from MPIfR
  can be found in 
  lab.fit.gz  lab250hs.fit.gz  labh.fit.gz
  Note: These files contain WRONG WCS keywords (e.g., the Galactic
  Center is located at l=180, b=0), do not use them in conjunction
  with liblabnh or the labnh program

