Abstract: Users are enabled to navigate a spreadsheet document presented by a web service in a similar fashion to a locally executed spreadsheet application by retrieving blocks of grid data asynchronously in order to display or refresh the area(s) of the spreadsheet currently being viewed by the user as the user navigates the spreadsheet grid or dynamic updates occur. The blocks are laid out in the browser's user interface to fill the user's viewport as well as a predefined buffer around the edge of the viewport. As such, when the user scrolls or updates occur, data associated with blocks are added, updated, or removed in the browser as required to fill the user's viewport.

Abstract: Users are enabled to navigate a spreadsheet document presented by a web service in a similar fashion to a locally executed spreadsheet application by retrieving blocks of grid data asynchronously in order to display or refresh the area(s) of the spreadsheet currently being viewed by the user as the user navigates the spreadsheet grid or dynamic updates occur. The blocks are laid out in the browser's user interface to fill the user's viewport as well as a predefined buffer around the edge of the viewport. As such, when the user scrolls or updates occur, data associated with blocks are added, updated, or removed in the browser as required to fill the user's viewport.

Abstract: For standalone spreadsheet applications and/or Web-based spreadsheet services, the ability to designate, discover and set parameters for spreadsheet documents is provided. When creating a spreadsheet document, the ability to designate certain cells or ranges of cells as parameters to a spreadsheet is enabled. Furthermore, whether viewed in a standalone spreadsheet application or via a Web service, the ability to discover these parameters through the user interface or object model is provided. The ability to set or change these parameters one at a time or in bulk and drive the changes into the calculation model is also provided. Accordingly, whether viewed in a standalone spreadsheet application or via a Web rendering service, the effect of the parameters entered by the user can be calculated and viewed at once. The ability to suspend recalculation of a workbook until all relevant values, such as a current set of parameters, are obtained is also enabled.