It was necessary for StumpWM which I no longer use.
! Make sure XTerm allows send events. Necessary for stumpWM so Ctrl-t t can
! send a Ctrl-t to the application running in XTerm. Thanks to [df] in
! #stumpwm on Freenode (2009-05-18 22:05).
! Make sure XTerm allows send events. Necessary for stumpWM so Ctrl-t t can
! send a Ctrl-t to the application running in XTerm. Thanks to [df] in
! #stumpwm on Freenode (2009-05-18 22:05).
-XTerm*allowSendEvents: true
+!XTerm*allowSendEvents: true
! Use 256 colors in XTerm.
XTerm.termName: xterm-256color
! Use 256 colors in XTerm.
XTerm.termName: xterm-256color