API Support   HLLAPI, EHLLAPI, WinHLLAPI HostExplorer supports the multiple HLLAPI DLLs for complete compatibility with Attachmate's® Extra! for Windows© and DCA's Irma for Windows©. These interfaces allow other Windows programs to communicate and control the 3270 and 5250 emulator. OLE 2.0 OLE Automation Server support to allow native access from high level languages such as Visual Basic 4, Visual C++, Delphi, etc DDE Dynamic Data Exchange, commonly referred to as DDE, is used for interprocess communications. It allows programs such as Excel, Word for Windows, and Visual Basic to interface with the 3270 emulator. With the DDE interface, you can create new terminal sessions, enter data, retrieve screens, transfer files, and even run macros. Unlike the EHLLAPI interface which is a low-level programmatic interface, typically from C or C++, the DDE interface in HostExplorer is designed to be used from high level languages such as Visual Basic or Word Basic. For example, with the DDE interface, you can write macros in Word for Windows to log you into the mainframe, transfer a file to the mainframe, and then send mail automatically. The DDE interface included with HostExplorer is compatible with Attachmate's® EXTRA! for Windows© DDE interface. This is designed to minimize the amount of work required to port applications to HostExplorer. BASIC Scripting A complete BASIC scripting language is included to facilitate task automation.