== snap tty-on grid=100x30 cursor=4,4
|Kill Newcol Tutor Debug Colors NextColor Dump
|  sy /tmp/pardes-snap/tty/cwd Del                   nm /tmp/pardes-snap/tty/cwd Del
|  $ ls
|  m.txt                                             m.txt
|  $
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|  nm /tmp/pardes-snap/tty/cwd Del
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|  m.txt
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== snap tty-echo grid=100x30 cursor=4,6
|Kill Newcol Tutor Debug Colors NextColor Dump
|  sy /tmp/pardes-snap/tty/cwd Del                   nm /tmp/pardes-snap/tty/cwd Del
|  $ ls
|  m.txt                                             m.txt
|  $ echo SNAP''OK
|  SNAPOK
|  $
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|  nm /tmp/pardes-snap/tty/cwd Del
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|  m.txt
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== snap tty-off grid=100x30 cursor=4,6
|Kill Newcol Tutor Debug Colors NextColor Dump
|  nm /tmp/pardes-snap/tty/cwd Del                   nm /tmp/pardes-snap/tty/cwd Del
|
|  m.txt                                             m.txt
|
|  SNAPOK
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|  nm /tmp/pardes-snap/tty/cwd Del
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|  m.txt
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