sublime-keymap.json

[
    { "keys": ["ctrl+alt+h"], "command": "clipboard_display" },
    { "keys": ["ctrl+up"], "command": "scroll_lines", "args": {"amount": 1.0 } },
    { "keys": ["ctrl+down"], "command": "scroll_lines", "args": {"amount": -1.0 } },
    {
        "keys": [
            "alt+down"
        ], 
        "args": {
            "action": "decrement_number_by_1"
        }, 
        "command": "run_emmet_action", 
        "context": [
            {
                "key": "emmet_action_enabled.decrement_number_by_1"
            }
        ]
    }, 
    {
        "keys": [
            "alt+up"
        ], 
        "args": {
            "action": "increment_number_by_1"
        }, 
        "command": "run_emmet_action", 
        "context": [
            {
                "key": "emmet_action_enabled.increment_number_by_1"
            }
        ]
    }
]