| 摘要 |
<p>An apparatus is provided comprising a touch sensitive display screen for displaying an emulated mathematics workbook graphical user interface including a plurality of input cell elements in a two dimensional grid. The apparatus stores a data structure defining a plurality of entities of a workbook page, each entity including content data associated with one of a plurality content types. The apparatus receives user input of content data associated with a cell, whereby a content type associated with user input is identified based on the location of the user input. A system of networked electronic devices is also provided for facilitating controlled sharing of workbook data.</p> |
