/usr/share/jed/lib/jed.hlp is in jed-common 1:0.99.19-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | Basic JED Commands: `^' means to use Ctrl key (e.g., ^D = Ctrl-D)
^KE exit ^D pagedown ^FF search ^K^B set mark
^V delete ^U pageup ^FB search back ^KK copy region
^E end of line ^K^W write buffer ^K^R replace ^K^P paste
^B beginning of line ^KG find file ^R redraw ^K^V cut region
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