Use Save As Command...
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Use Photomerge command from File > Automate > Photomerge to create panorama then save as JPEG from File > Save As or Save for Web & Devices.
a file
The Save As comand is used for various things. It canbe used to save the file with a new name, giving you a separate copy of the file. It can be used to save the file into a new location. It can be used to save the file into a different format.
For any standard Mac application, use the Save or Save As... command under the File menu. If the particular Mac application doesn't have a File menu, or chooses to use a different command, report it as a bug to the developer; all Mac applications that save files should use the standard method.
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While not universal, most applications will allow you to save a file or document for the first time by going to File > Save As. Subsequent changes to the file can be made by going to File > Save. Also after making changes to a document, when you try to exit the program without saving, it will ask to confirm and allow you to save the document.
The Save As command.
You would need to use the 'save as' command in OpenOffice and save the file as MS Office format.
It allows you to save as a different file name, effectively creating an entirely new file instead of saving over the old one. The old one is kept.
The application will close immediately. As your file has been saved and is up to date, there is no need for the application to ask if you want to save it. This would happen if the file had not been saved.