3 Standardised header
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Autohotkey (20)

Autohotkey, 20 bytes

send Hello, World{!}

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

send Hello, World{!}

Autohotkey (20)

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

send Hello, World{!}

Autohotkey, 20 bytes

send Hello, World{!}

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

2 added 3 characters in body
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Autohotkey (1720)

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

send Hello, World{!}

Autohotkey (17)

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

send Hello World!

Autohotkey (20)

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

send Hello, World{!}

1
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Autohotkey (17)

Please don't count this one. I don't want to cheat out people who have actually done this with a language not meant for sending keystrokes. This answer is just for completion :P

send Hello World!