Things wrong with xcalc

• Button text doesn't scale as the window is scaled
• AC clears memeory
• No visual feedback when keyboard shortcuts are used (especially for operators)
• Buttons should be square
• Buttons should re-array themselves to stay squarish
• When window is large, a large amount of the left side of the output display is unused
• ability to FLIP the arguments to minus, divide, and power.
• Backspace
• 5 + = = = = = should print out multiples of 5
• A few more extra functions, like erf, binomial
• reverse polish notation
• Scroll back of the calculation (view stack)
• cut and paste buttons
• Sound feedback