I find there is one line let g:netrw_bufsettings = 'noma nomod nu nobl nowrap ro' in my _vimrc file. Google says it could make netrw buffers buflistedWhat does it mean to make netrw buffers buflisted? Can anyone explain what the line in the _vimrc file does?
What does it mean to buflist netrw buffer?
buffers;netrw
The g:netrw_bufsettings option is what allows you to set options that vim will only apply to netrw buffers.  A buffer is essentially a file that is loaded in vim, whether it actually exists on your hard drive or not.  You can get a list of all these buffers using the :ls command.  When the buflisted option is set (which can be done manually like so: :set buflisted), it means that the buffer will be listed in the output of :ls and will be included in the current buffer list.For more help on the commands used here, see these resources::help 'buflisted':help :ls:help :set