Creating a new SCA, accomplished by GreOpenScreenChangeArea (SCRAREA.C), requires the following steps:

• Allocate memory for the new SCA instance

• Set the cRects field to be zero

• Set the pStartSca global variable to point to the new SCA address

• Link the instance to the linked list of SCAs

The newly created SCA will be identified by a 32-bit handle, which is the address of the SCA location in the display driver.