The alias property of the callLink element of the linkage options part specifies the runtime name of the program identified in the pgmName property. The alias property affects the generation of the calling program.
In addition for a non-EGL called program whose name conflicts with the EGL reserved word list, you can use a fictitious (but legal) program name in the call statement used in the program. In the callLink element, set the pgmName property to the fictitious name, and set the alias property to specify the actual program name.
The value of this property must match the alias (if any) you specified when declaring the called program. If you did not specify an alias when declaring the called program either set the alias property to the name of the called program, or do not set the property at all.