*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS

This warning message is typically displayed by a linker program during the compilation process. It indicates that a particular segment of code or data has not been called or used in the program and has therefore been ignored for the overlay process. Overlays are a technique used by linker programs to optimize the use of memory in a program by selectively loading and unloading different sections of code or data as needed. When a segment is marked as uncalled or unused, it is ignored during the overlay process to save memory and improve program efficiency. While this warning message may not necessarily indicate a problem with the program, it can be useful for identifying potential areas where code or data could be further optimized or removed.