It’s a bit hard to remember, so here is commands whihc can be usefull for nano
control
+\
thencontrol
+y
to go to the top of the filecontrol
+6
mark/unmarkcontrol
+k
delete market contentcontrol
+k
delete market content
control
+ \
then control
+ y
to go to the top of the filecontrol
+ 6
mark/unmark
control
+ k
delete market contentcontrol
+ k
delete market content