Made for this r/SomebodyMakeThis post
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mouse wheel scroll up (next) or down (previous)
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text is always active like a textbox, so just click to focus and then type
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right click to access context menu, for common commands like copy & paste, and also change background to GIF
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right click tray icon to access about popup, or to exit the program
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Enter to add a new text
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Backspace the whole text to delete it (unless it's the only one remaining)