If cursor is small than you can use CURSORTOXML() with inline schema and store results in a collection or array

>I have the following problem.
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>I have a small cursor for which I want to provide the capability to revert to an earlier version.
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>Thus, each time I make a change to it, I want to take a snapshot of it, so that I can go back to that snapshot if necessary.
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>Now, I can select from the cursor into an array (to take the snapshot), and I can append from array to go back to that snapshot if desired.
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>But, how do I store those arrays that are created each time I make a change? I thought of having a collection, but I don't know how to save an array into a collection. I thought of an array, but I can't save an array as an element in an array?
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>Any suggestions?
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>Thanks