7. A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by an electronic device with a display, cause the device to: display at least a portion of an electronic document at a first magnification level on the display; detect an input indicating a point within an object in the document; and in response to detecting the input: in accordance with a determination that the object includes respective editable text: select a second magnification level different from the first magnification level, wherein the second magnification level is selected so as to display the respective text at a target text display size; and display the document at the second magnification level; and in accordance with a determination that the object does not include editable text: select a third magnification level different from the second magnification level, wherein the third magnification level is selected so as to display the object at a target object display size; and display the document at the third magnification level.
7. A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by an electronic device with a display, cause the device to: display at least a portion of an electronic document at a first magnification level on the display; detect an input indicating a point within an object in the document; and in response to detecting the input: in accordance with a determination that the object includes respective editable text: select a second magnification level different from the first magnification level, wherein the second magnification level is selected so as to display the respective text at a target text display size; and display the document at the second magnification level; and in accordance with a determination that the object does not include editable text: select a third magnification level different from the second magnification level, wherein the third magnification level is selected so as to display the object at a target object display size; and display the document at the third magnification level. 8. The computer readable storage medium of claim 7 , wherein the second magnification level is selected without reference to a size of the object.