A method, comprising: at an electronic device having one or more processors, one or more accelerometers, a touch-sensitive surface, memory, and a display: while the electronic device is in a first tilted state, displaying a content page in a sketch mode, the displaying comprising: displaying a zoomed view of a first portion of the content page, and configuring the zoomed view of the first portion of the content page to accept user inputs modifying content in the first portion of the content page; while displaying the content page in the sketch mode, detecting that the electronic device is tilted from the first tilted state to a second tilted state distinct from the first tilted state; in response to detecting that the electronic device is tilted from the first tilted state to the second tilted state, displaying the content page in an overview mode, comprising: zooming out to display an overview of the content page, wherein displaying the content page in the overview mode includes displaying an input position indicator over the overview of the content page to indicate the first portion of the content page previously displayed in the zoomed view; and while displaying the content page in the overview mode: detecting on the touch-sensitive surface of the electronic device a user input moving the input position indicator to a second portion of the content page that is different from the first portion of the content page; and while the input position indicator is located at the second portion of the content page, detecting that the electronic device is tilted from the second tilted state to a third tilted state; and in response to detecting that the electronic device is tilted from the second tilted state to the third tilted state, displaying the content page in the sketch mode, comprising: displaying a zoomed view of the second portion of the content page; and configuring the zoomed view of the second portion of the content page to accept user inputs modifying content in the second portion of the content page. while the electronic device is in a first tilted state, displaying a content page in a sketch mode, the displaying comprising: displaying a zoomed view of a first portion of the content page, and configuring the zoomed view of the first portion of the content page to accept user inputs modifying content in the first portion of the content page; displaying a zoomed view of a first portion of the content page, and configuring the zoomed view of the first portion of the content page to accept user inputs modifying content in the first portion of the content page; while displaying the content page in the sketch mode, detecting that the electronic device is tilted from the first tilted state to a second tilted state distinct from the first tilted state; in response to detecting that the electronic device is tilted from the first tilted state to the second tilted state, displaying the content page in an overview mode, comprising: zooming out to display an overview of the content page, wherein displaying the content page in the overview mode includes displaying an input position indicator over the overview of the content page to indicate the first portion of the content page previously displayed in the zoomed view; and while displaying the content page in the overview mode: detecting on the touch-sensitive surface of the electronic device a user input moving the input position indicator to a second portion of the content page that is different from the first portion of the content page; and while the input position indicator is located at the second portion of the content page, detecting that the electronic device is tilted from the second tilted state to a third tilted state; and detecting on the touch-sensitive surface of the electronic device a user input moving the input position indicator to a second portion of the content page that is different from the first portion of the content page; and while the input position indicator is located at the second portion of the content page, detecting that the electronic device is tilted from the second tilted state to a third tilted state; and in response to detecting that the electronic device is tilted from the second tilted state to the third tilted state, displaying the content page in the sketch mode, comprising: displaying a zoomed view of the second portion of the content page; and configuring the zoomed view of the second portion of the content page to accept user inputs modifying content in the second portion of the content page.