def_key "j"
     scroll_down
 def_key "k"
     scroll_up
 
 def_key "h"
     previous_column
 def_key "h"
     jump_to_parent_directory
 def_key "l"
     next_column
 def_key "l"
     enter_directory
 
 def_key "J"
     move_sort_order_down
 def_key "J"
     move_selected_items_down
 def_key "K"
     move_sort_order_up
 def_key "K"
     move_selected_items_up
 
 def_key "g"
     move_home
 def_key "G"
     move_end
 
 def_key "ctrl-u"
 #   page_up
     push_characters "kkkkkkkkkkkkkkk"
 def_key "ctrl-d"
 #   page_down
     push_characters "jjjjjjjjjjjjjjj"
 
 def_key "n"
     next_found_item
 def_key "N"
     previous_found_item
 
 def_key "t"
     jump_to_position_in_song
 def_key "0"
     replay_song