Karabiner Complex Modification Rules

gistfile1.txt

"rules": [
    {
        "description": "print_screen to command+shift+3",
        "manipulators": [
            {
                "from": {
                    "key_code": "print_screen"
                },
                "to": [
                    {
                        "key_code": "3",
                        "modifiers": [
                            "left_command",
                            "left_shift"
                        ]
                    }
                ],
                "type": "basic"
            }
        ]
    },
    {
        "description": "shift+print_screen to command+shift+4",
        "manipulators": [
            {
                "from": {
                    "key_code": "print_screen",
                    "modifiers": {
                        "optional": [
                            "left_shift",
                            "right_shift"
                        ]
                    }
                },
                "to": [
                    {
                        "key_code": "4",
                        "modifiers": [
                            "left_command",
                            "left_shift"
                        ]
                    }
                ],
                "type": "basic"
            }
        ]
    }
]