Remove changes do not necessary?

I'm new to Lightroom 3 and I'm experimenting with different settings on different photos.  It's just experimenting I don't want to save.  My impression is that Lightroom saves the changes in a database.  I don't want to clutter up the database with all of these changes that are just for learning purposes.  Is there a way to get rid of them, other than the undo'ing each edit after you have finished each photo?

Why can't you just click on the button "Reset"?  Who will restore the image how it was when it was imported.  If you select several images and auto sync enabled, Lightroom resets all the images at once.  Personally, I think you're worrying about something unnecessarily.  Even if you are experienced, you can keep these adjustments during a day or two, while that evaluate you and learn.  The database is quite dynamic and I do not think you can 'clutter' it that you propose.

Tags: Photoshop Lightroom

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