Revert da4cbbc4 due to old versions of less on Draco and Cobra

.env

@@ -18,7 +18,8 @@ export EDITOR
 
 # default options for less
 # default used by git if LESS is unset: LESS='FRX'
-LESS="$LESS -F -i -M -R -x4"
+# TODO: make -F work without -X (works since less v530, but Draco/Cobra have < v530)
+LESS="$LESS -i -M -R -x4"
 export LESS
 
 # set variable to mark this file as read