-# Create a file named "pickpref.prf" or "pickpref-<<name>>.prf"
-# (or move and rename this file) in the same directory as your
-# user preference files. This will be ~/.angband/Hengband/
-# for UNIX, or hengband/lib/user/ for other operating systems.
-#
-# The game will read the file "pickpref-<<current character
-# name>>.prf" first and then read the file "pickpref.prf". The
-# first-read file takes priority.
-#
-# You may use the '$' command within the game to reread auto-
-# picker files.
+# Press the _ in a game to enter editor mode for preference of
+# auto-picker/destroyer. Basic usage of the editor is almost same
+# as vi, and also have emacs like commands. Most commands is
+# always displayed on the first line and the right half of the
+# screen.
+#
+# Important commands
+# 'a', 'i' or ^Q : Enter insert mode from command mode
+# ESC or ^Q : Return to command mode from insert mode
+# 'q' : Quit the editor (command mode only)
+# 'hjkl2468' : Move cursor (command mode only)
+# ^B ^N ^P ^F : Move cursor (always)
+# ^I : Choose an item from inventry/equipment, then insert its name
+# ^S : Rotates action (pick up / destroy / leave on floor)
+# ^U : Rotates identify state (identified / unidentified / ...)
+# ^L : Insert name of the last auto-destroyed item.
+# '/' : Search string, or search an item specified by ^I or ^L.
+# 'n' : Search next
+# 'N' : Search previous
+#
+# The preference will be saved in a file named
+# "pickpref-<<name>>.prf" in your user directory; This will be
+# ~/.angband/Hengband/ for UNIX, or hengband\lib\user\ for other
+# operating systems. You may edit this file using any text
+# editor, and may use the '$' command within the game to reread
+# this file. When you don't use the in-game editor, you may use
+# "pickpref.prf" as preference file.
+#
+# When there are both files, the game will read the file
+# "pickpref-<<current character name>>.prf" first and then read
+# the file "pickpref.prf". The first-read file takes priority.