TODO


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This should only used when necessary when when a specific flag is used.
  Before all lines, add 10ⁿ−1 empty lines where n is as small as possible
  to retain as line numbers but with a constant multiple. Then add m10ᷜ
  number of empty lines at the top of the file, where k is large and n is
  the number specified above. Because of line continuations and disc
  resources it is best to implement this in gpp.

The option above should be aware of line continues using a backslash at
the end of the line before the continuation unless another flag is used.
This could either be an additional flag or an alternative flag (uppercase
of the above's.)