.TUTORIAL - The [ EXTERNAL ] keyword; re-use ADEMO3 w/[ APPLICATION ]

How to "reserve" an event name with a keyword.

This is identical to the prior example, except that we list the event
name under the [ EXTERNAL ] keyword.

NOTES
-----
There's no sense in copying the *.INC and *.VIR files from the prior
example; we can re-use custom components (*.INC, *.VIR and *.EVT
files) with the [ APPLICATION ] keyword.

@PA - - - - - - - - - - - - - - - - - - - - - - - - - - - -


[ APPLICATION ] ademo3  ;;this is a default hint      @@ change name set

[ UNIT ]
General /r                                            @@ Use & register

[ EXTERNAL ]
open

[ SUBMENU ] File        ;;file management
Open                    ;;open a file                 @@ *.INC file
Save                    ;;save current window         @@ EDITORS internal
