OpenVMS RTL Screen Management (SMG$)

The OpenVMS RTL Screen Management (SMG$) Manual is a comprehensive guide to the SMG$ facility of the OpenVMS Run-Time Library. Part I offers a tutorial on core screen management concepts, including pasteboards, virtual displays, viewports, virtual keyboards, and menu operations. It also covers advanced features such as asynchronous event trapping, subprocess management, and terminal capability definitions using TERMTABLE. Part II provides an alphabetical reference section detailing each routine in the SMG$ facility, complete with format, argument descriptions, and return conditions. The manual includes numerous code examples in various OpenVMS programming languages to demonstrate routine usage.