Calculators Editing Equations on a Ti-83+ Calculator

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To edit an equation on the Ti-83+ calculator after hitting the equals button, use the combination [2nd] [ENTER]. This will recall the previous equation, allowing for modifications. This feature is particularly useful for Math 12 students needing to adjust equations for further calculations.
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Just a quick question about the Ti-83+ calculator. After you have hit the equals button to provide the solution for an equation, how do you get back into the equation to make any changes? The error key is not what I'm looking for, is it possible to make any changes you want in the equation? I asked my Math teacher and she didn't know, this is for Math 12 in case you were wondering. Thanks!
 
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hit [2nd] [ENTER] and it will give you what your equation was previously, this by the way is second, entry.
 
Thanks, that really helped! Sorry that I may have posted it in the wrong forum.
 

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