The SAP GUI for HTML is one of two models (the other is Web Transactions) for implementing SAP Internet applications that allow users to run R/3 dialog transactions directly from a Web browser.

Both models are driven by the SAP Internet Transaction Server (ITS), but their approach to implementation is different:

• Web Transactions

This model allows you to convert R/3 transactions to Internet Application Components (IACs) by creating the services, HTML templates (one per R/3 transaction screen), and other ITS files yourself.

To implement IACs using this model, you have to map each R/3 screen element to HTML manually. For this reason, you need some knowledge of HTML, HTML^Business, and, because of the demand for highly interactive HTML pages, scripting languages such as JavaScript. To create services and HTML templates, you also need to know how to use the SAP R-3 SAP@Studio - Webstudio

• SAP GUI for HTML

This model automatically maps the screen elements in R/3 transactions to HTML, using HTML^Business functions inside the ITS. Each of these HTML ^Business functions handles a different screen element, and uses the screen attributes to position HTML controls at the same position on the HTML page as on the R/3 screen.

To implement Internet applications using this model, you need little or no knowledge of HTML, HTML^Business, or JavaScript. Also, you do not have to be familiar with the SAP@Web Studio, because the SAP GUI for HTML generates the required templates automatically.

SAP ships a standard library of HTML^Business functions for mapping R/3 screen elements to HTML, but you can modify these without having to make any changes in R/3.