Function button related Photoshop Shortcut 

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F1 function keys 

To start help

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F2 function keys

To cut a selection

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F3 function keys

To copy a selection

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F4 function keys

To paste a cut/copied content

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F5 function keys

To show/hide brush panel

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F6 function keys

To show/hide the color panel

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F7 & F8 Function keys

To show/hide Info panel

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F9 function keys

To show/hide actions panel

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F12 function keys

To apply Revert operation

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Shift + F5 function keys

Fill color

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Shift + F6 function keys

To activate feather selection

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Shift + F7 function keys

To activate an inverse selection

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