nano: Limitations

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1 4.8 Limitations
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1 Justifications (‘^J’) are not yet covered by the general undo system.
1 So after a justification that is not immediately undone, earlier edits
1 cannot be undone any more.  The workaround is, of course, to exit
1 without saving.
1 
1    The recording and playback of keyboard macros works correctly only on
1 a terminal emulator, not on a Linux console (VT), because the latter
1 does not by default distinguish modified from unmodified arrow keys.
1