{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Can you give an example to illustrate the scenario of cross-program call?","a":"Process management in operating systems: When a process needs to access the data  or resources of another process, it can be achieved through cross-process calls. For example, in Linux systems, system calls (such as pipe, msgpacket, etc.) are used to communicate between parent and child processes."}]}],"pr":"b29d69863c03783e03767cffd631bf259f36480e26b4f2896aff9d4782ad8e60"}