Once you're in the summarize service, you can quickly and easily shorten the selected text by moving the slider between 1% and 100%. As you move it, the text will magically get shorter, while at the same time keeping the basic meaning of the text that you originally selected. The service is so accurate that it's sometimes scary.
When you're done, you can save your summarized text by closing out the window -- you will be asked to save or discard. The result is a .rtf file.
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