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- each history is doc-based even if you have opened not only one instance of the same spf file
- for each SPF file identified by its file URL SP remembers each history item regardless from which doc instance it comes from internally ( to make sure that after closing the last instance of a doc all executed queries are saved in that file - if the user wants to change that s/he has to save that file under a different name )
- the history list for each Untitled doc will be initialized by the items stored in the global SP's prefs
- the history list for each SPF doc will be initialized by the items stored in the SPF file unless an instance of the same file is already open - then the new instance inherits the history list from the opened one(s)
- all history items executed in any Untitled docs will be added to SP's prefs - in other words SP's global prefs plist is the historyrepository for each new Untitled doc
- if the user saves an untitled doc or rename an opened SPF file the _current_ history list for that doc will be saved to the chosen file unless an other doc instance is still open
- all history lists are saved automatically if SP quits or the user closes a doc window
Note: This should be tested for any logical pitfalls - each desired logic can be implemented :)
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