copy here \w suffix for multiple files; & duplicate comm

[serendipity]

I wish "copy here with suffix", ".. suffix date now" and ".. suffix date modified" would work for more than one file, unless there is a obvious reason not to.

Also, none of the current copy/paste commands "duplicates" (making a copy of original file, keeping the created and modified dates intact), except backup which won't do it on current folder.
Wondering if others would use "duplicate" command.