CLPROF: Clear the Contents of the PROFILE Buffer

CLPROF sets all parameters in the PRF common block to zero. CLPROF should always be used when the command GET PROF= is used to overwrite the existing contents of the profile block with new profile parameters stored in a .pro file. If CLPROF is not run, and if the profile being overwritten is larger than the new one, the old parameters will remain in the common block for radii larger than the maximum radius of the new profile.

To retain the existing profile parameters out to a given radius, setting them to zero beyond this, the optional keyword RAD=r may be given. All profile parameters corresponding to radii greater than or equal to r are then set to zero. This is valuable if a PROFILE calculation is seen to have gone awry beyond a certain radius.