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double click on Textbox and create modal form with a much larger textbox, cloning the text contents

I have the following form that has a description text box toward the bottom. There has been a request to be able to increase the size of the textbox because sometimes a long email has been pasted into the textbox and the reader wants to be able to see a much larger view of it instead of having to scroll vertically and horizontally and only see a partial view of the contents.

It was recommended that I allow the user to resize the whole form in order to accomplish this text box'enlargement' for viewing or perhaps editing.

I really don't want to handle the repositioning of all the other controls at the top of the form.

Is there a way to double click on the textbox which would duplicate the textbox contents in a new modal form. Closing the form will offer the ability to save the contents back to the original form. Back on the orignal form, the contents will revert to requiring the need to scroll vertically and horizontally.

Thank you,   greg

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