Use backspace in vim

In normal mode, I'm not aware of backspace mapped to anything. Then I remmapped it in order to have a behaviour like in a file explorer or internet browser

nnoremap <backspace> :pop<CR>
autocmd FileType netrw nmap <buffer> <backspace> -

I can now follow the links in the documentation and come back with backspace and in the file explorer up one level of folder.

And in bonus:

autocmd FileType help nmap <buffer> <Return> <C-]>

Follow the links with enter when in the help pages