BASIC USAGE

  SDES has two main modes of usages - a normal size mode where you work with
  units the size of a character, and a tiny mode that works with units half
  the size of a characters (namely # and #). The size of the cursor will
  reflect which mode you are currently in, and you can press F9 to toggle
  from one mode to the other. Note that many of the hotkeys have different
  meanings depending on the mode you are in.

  Other than these two main modes, there are also various lower level modes
  that you will change into when performing certain functions, however these
  are all really sub-modes of the normal mode - they will described in one
  of the later sections. Note that a mode is defined as a particular program
  state in which the standard keystrokes take on different meanings.

  Since most of what you do is dependant on the position of your cursor, it
  is important that you be able to move it around. For this you can use the
  arrow keys, as well as <Home> to jump to the first column, <End> to jump
  to the last column, <PgUp> to jump to the first line, and <PgDn> to jump
  to the last line.

  Almost everything else is dependant on your current mode, and will be
  explained in detail below, but for now, you may also want to remember that
  F1 brings up a help screen (some of the time at least).