According to lesskey \b signifies backspace, and \kx signifies delete.
I have tried both:
~/.lesskey
#command
\kx back-screen
\b back-screen
on Kitty and Apple Terminal, and neither seems to work.
❯ less --version
less 608 (PCRE2 regular expressions)
Copyright (C) 1984-2022 Mark Nudelman
less comes with NO WARRANTY, to the extent permitted by law.
For information about the terms of redistribution,
see the file named README in the less distribution.
Home page: https://greenwoodsoftware.com/less
MacOS 13.0
