A computer-implemented system for creating an electronic document is provided wherein the document is generated based on data added to an electronic form by a user through interaction with a computer. In one embodiment, the system is programmed to perform the steps of: (a) displaying a first screen view on a graphical output device, said first screen view including an entry area arranged to allow a user to enter through an input device one or more line item descriptors and one or more first data elements in association with each line item descriptor; (b) sending off every entered line item descriptor and every entered first data element for storage in a first database; (c) displaying a second screen view on a graphical output device, said second screen view including said form and being arranged to allow a user to add data to said form; (d) displaying in said second screen view one or more control elements each associated with a respective line item descriptor stored in said first database, each control element being configured to be activated through user operation of an input device; (e) upon activation of a control element by a user, submitting a request to said first database to read said one or more first data elements associated with said line item descriptor corresponding to said activated control element; and (f) adding data derived from said read one or more first data elements to said form.