org-export-copy-to-kill-ring

org-export-copy-to-kill-ring is a variable defined in `ox.el'.
Its value is

if-interactive

Documentation:
Non-nil means pushing export output to the kill ring.
This variable is ignored during asynchronous export.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.3 of Emacs.