Make emacs file variable header take effect

Question

I frequently paste the line

# -*- org-export-with-sub-superscripts: {}; -*-

into my .org files. To get this to take effect for the next export, the simplest way I've found is to kill the buffer and reopen the file. How can I make this happen without killing the buffer (which is clumsy and loses undo history)?

Answer 1

You can use M-x normal-mode to have the file-local variables reapplied.