[
   break70.bf - Don Yang (uguu.org)

   Insert newline every 70 characters.

   09/03/04
]

++++++++++
>++++++++[>+++++++++<-]>--
>+

|10 0 70 ^1

[
   Assume EOF and read char
   ->,+        |10 0 70 0 ^c

   [
      Output char
      -.

      Update counter
      >+<<<-         |10 0 ^70 1 c 1
      [
         >>>-<<<<
      ]<[>]          |10 ^0 70 1 c ?

      >>>>
      [
         Output newline
         <<<<<.

         Reset counter
         >++++++++[>+++++++++<-]>--
         >>>-
      ]

      Unset EOF
      <<+>
      [-]
   ]<
]

Extra newline at the end
<<<.