printf "\033c"? I don't know if it resets, but it does clear the scroll buffer. I use it before compiling (printf "\033c"; make) so that I don't have to search for the first error or warning, I can just scroll all the way up.
printf \\33c
exec echo 1b63 |exec xxd -p -r
echo -e '27\n99\n' |exec nc-data -g
exec echo |exec sed '1i\
27 \
99
' |exec nc-data -g/ is a forward slash, a.k.a. simply “slash”
Probably better to just use "escape" for backslash and "slash" for forward slash.
Sounds like your terminal clears everything? vt100 variants are a, uh, delightful mix of nearly-compatible dialects...