keybindings.json

// Place your key bindings in this file to overwrite the defaults
[
    {"key": "alt+cmd+\\", "command": "editor.action.commentLine"},
    {
        "key": "cmd+alt+ctrl+\\",
        "command": "workbench.action.splitEditor"
    },
    {
        "key": "cmd+[Backslash]",
        "command": "editor.action.commentLine",
        "when": "editorTextFocus && !editorReadonly"
    },
    {
        "key": "shift+cmd+7",
        "command": "-editor.action.commentLine",
        "when": "editorTextFocus && !editorReadonly"
    }
]