you seem to get the idea already, some people send PDF to print, rather than open it for rendering, the tag helps a user make a choice and not be surpised by fi

you seem to get the idea already, some people send PDF to print, rather than open it for rendering, the tag helps a user make a choice and not be surpised by filetype. some people are here on work machines, or metered data connections, and tags for "deeplinks" to files, really help.