What handles can you not hold in your hand in compuetr terms?

In computer terms, "handles" that you cannot physically hold in your hand include software constructs like file handles, memory handles, and process handles. These are abstract references used by the operating system or applications to manage resources such as files, memory allocation, or running processes. They facilitate interaction with system resources without exposing the underlying complexity. Essentially, they serve as pointers that allow software to access and manipulate these resources efficiently.