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 The prompt IDA normally is followed by a list of default-files.
  Most commands operate on these files. To operate on other files, 
  enter a new filelist, followed by a command or not.

*f

IDA> command group f* 
        (files: input, output, creation,
                reorganisation in on-line-memory)
   fl  = load from disk
   fm  = make
   fc  = copy
   fdel= delete
   fx  = exchange (fc and fdel)
   fw  = write to disk

*fl

IDA () fl <filename> : load file(s)
    Load data files into on-line memory.
  Usage : with argument :    load one file
          without argument : loop (reply nothing [RETURN] to exit)
    If File names are given without extension, the program looks first
  for ".dat", then for ".asc". 
    File formats : ILL-CrossX, IDA-binary, or IDA-ASCII
    Source : FileWrite in i2.f, colling LoadSpectrum in i1.f       

*fw

IDA (file-nos) fw : write file(s)
    Save internal files on external device.
  Any files hold in IDA's on-line memory can be saved, including curves.
  As external filename, any valid path name is accepted. If filenames
  are given without extension, files will be saved as ".dat", except
  if ASCII-format is chosen in which case the extension will be ".asc".
    Recommended storage format is IDA-binary; use IDA-ASCII if data shall
  be send to sites with different operating system.
    Source : FileLoad in i2.f, calling SaveSpectrum in i1.f       

*fdel

IDA (file-nos) fdel : delete files
    Files are deleted from on-line memory.
  There is no way to recover deleted files. Use "fw" to save results.
    Source : FileKill in i3.f, calling FileDel in i2.f

*fc

IDA (file-nos) fc : copy files
    Duplicate files in on-line memory.
    Source : FileCopy in i3.f

*fx

IDA (file-nos) fx : exchange order of files
    Files are copied to the end of the on-line memory, 
  then deleted from their original positions. 
    Source : FileCopy and FileKill in i3.f

*fm

IDA () fm : make a new file
    Create a new on-line file. 
  This option is used to enter data manually, or to convert foreign formats.
  It includes the older conversion program any2ied.
    For converting foreign data formats, first go through the interactive 
  questions section. Then, the program asks to enter spectra in a format
  you have determined before. At this point, use "\ie <filename>" to read 
  the data points from an external file.
    Source : FileMake in i3.f