Examine source code of ReWP

{
  "manifest_version": 2,
  "name": "ReWP",
  "version": "1.0.1",
  "description": "ReWP.",
  "icons": {
    "48": "icons/Search Windows.svg"
  },
  "permissions": [
    "activeTab",
    "find",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/Search Windows.svg",
    "default_title": "ReWP",
    "default_popup": "html/searchbar.html"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Comma"
      }
    },
    "ReWP-ClearAll": {
      "suggested_key": {
        "default": "Ctrl+Period"
      },
      "description": "Clear search text and result"
    },
    "ReWP-NextKeyword1": {
      "suggested_key": {
        "default": "Alt+1"
      },
      "description": "Go to next keyword 1"
    },
    "ReWP-NextKeyword2": {
      "suggested_key": {
        "default": "Alt+2"
      },
      "description": "Go to next keyword 2"
    },
    "ReWP-NextKeyword3": {
      "suggested_key": {
        "default": "Alt+3"
      },
      "description": "Go to next keyword 3"
    },
    "ReWP-NextKeyword4": {
      "suggested_key": {
        "default": "Alt+4"
      },
      "description": "Go to next keyword 4"
    },
    "ReWP-NextKeyword5": {
      "suggested_key": {
        "default": "Alt+5"
      },
      "description": "Go to next keyword 5"
    },
    "ReWP-NextKeyword6": {
      "suggested_key": {
        "default": "Alt+6"
      },
      "description": "Go to next keyword 6"
    },
    "ReWP-NextKeyword7": {
      "suggested_key": {
        "default": "Alt+7"
      },
      "description": "Go to next keyword 7"
    },
    "ReWP-NextKeyword8": {
      "suggested_key": {
        "default": "Alt+8"
      },
      "description": "Go to next keyword 8"
    },
    "ReWP-NextKeyword9": {
      "suggested_key": {
        "default": "Alt+9"
      },
      "description": "Go to next keyword 9"
    },
    "ReWP-NextKeyword0": {
      "suggested_key": {
        "default": "Alt+0"
      },
      "description": "Go to next keyword 10"
    },
    "ReWP-PreviousKeyword1": {
      "suggested_key": {
        "default": "Ctrl+Alt+1"
      },
      "description": "Go to previous keyword 1"
    },
    "ReWP-PreviousKeyword2": {
      "suggested_key": {
        "default": "Ctrl+Alt+2"
      },
      "description": "Go to previous keyword 2"
    },
    "ReWP-PreviousKeyword3": {
      "suggested_key": {
        "default": "Ctrl+Alt+3"
      },
      "description": "Go to previous keyword 3"
    },
    "ReWP-PreviousKeyword4": {
      "suggested_key": {
        "default": "Ctrl+Alt+4"
      },
      "description": "Go to previous keyword 4"
    },
    "ReWP-PreviousKeyword5": {
      "suggested_key": {
        "default": "Ctrl+Alt+5"
      },
      "description": "Go to previous keyword 5"
    },
    "ReWP-PreviousKeyword6": {
      "suggested_key": {
        "default": "Ctrl+Alt+6"
      },
      "description": "Go to previous keyword 6"
    },
    "ReWP-PreviousKeyword7": {
      "suggested_key": {
        "default": "Ctrl+Alt+7"
      },
      "description": "Go to previous keyword 7"
    },
    "ReWP-PreviousKeyword8": {
      "suggested_key": {
        "default": "Ctrl+Alt+8"
      },
      "description": "Go to previous keyword 8"
    },
    "ReWP-PreviousKeyword9": {
      "suggested_key": {
        "default": "Ctrl+Alt+9"
      },
      "description": "Go to previous keyword 9"
    },
    "ReWP-PreviousKeyword0": {
      "suggested_key": {
        "default": "Ctrl+Alt+0"
      },
      "description": "Go to previous keyword 10"
    }
  }
}