RBEdit Development Strategy Checklist
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                                                                STATUS
                                                                ------
 Data structure implementation, memory management               done
 design/implementation (text, line index, and
 state var segments)

 Creation and Destruction of the edit window, first             done
 DLL build process, simple WM_PAINT handler

 Navigation I (scolling via scrollbars)                         done

 Caret placement / management                                   done

 WM_KEYDOWN handler I (function key recognition / dispatch)     done

 WM_SETTEXT handler                                             done

 Navigation II (cursor positioning via keyboard)                done
  - arrows, HOME, END, PgUP/PgDN, etc.

 WM_PAINT handler II (painting the selection)                   done

 Selection I (selecting text via keyboard)                      done

 "Active Line Edit" support functions                           done
  - copy from main edit text                    done
  - copy to main edit text                      done
  - shifting of main edit text                  done
  - shifting of line index table                done
  - line size checking                          done
  - text size checking                          done

 Edit support functions
  - Deletion of selection
  - Replacement of selection (char)             done
  - Replacement of selection (stream)
  - Replacement of selection (clipboard)

 Edit I (simple char insertion)                                 done

 Edit II (CR handler)

 Edit III (backspace handler)                                   done

 Edit IV (line delete handler)                                  done

 Edit V (TAB handler)                                           done
 - tab expansion                                done
 - multiline selection tab/shift-tab (block indent) done

 Edit VI (DELETE handler)                                       done

 Edit VII (Stream insertion)

 Nagivation III (cursor positioning via mouse)                  done

 Selection II (selecting text via mouse)                        done

 Clipboard I (copy)

 Clipboard II (cut)

 Clipboard III (paste)

 Undo (???)

 Client-interaction messages
    - WM_GETTEXT handler
    - WM_SETTEXT handler                                        done
    - EM_GETHANDLE handler
    - EM_GETLINE handler
    - EM_GETLINECOUNT handler
    - WM_GETTEXTLENGTH handler
    - EM_GETSEL handler
    - EM_SETSEL handler
    - EM_REPLACESEL handler
    - EM_GETMODIFY handler
    - EM_SETMODIFY handler
    - EM_SETTABSTOPS handler
    - EM_LINEFROMCHAR handler                                   done
    - EM_LINEINDEX handler
    - EM_LINELENGTH handler
    - RBEdit-specific interaction messages (TBD)

 Notification messages
    - EN_CHANGE
    - EN_ERRSPACE
    - EN_HSCROLL
    - EN_KILLFOCUS
    - EN_MAXTEXT
    - EN_SETFOCUS
    - EN_UPDATE
    - EN_VSCROLL