file.
In general, ndfaccess (ndfcaccess) must be called before ndfinit (ndfcinit).
If the transport correction type is to be set, then ndftrcorr (ndfctrcorr) must be call
after each call to ndfinit (ndfcinit) as ndfinit (ndfcinit) resets the
transport correction type to the default.
After ndfinit (ndfcinit) one must call ndfbuff) (ndfcbuff). (If ndfcopen is
used instead of ndfcinit then one must not call ndfcbuff.) Before any target specific information can be obtained,
ndfiso (ndfciso) must be called to select the desired target. To open another file
ndfclose (ndfcclose) must first be called to close the current file.