How to perform 'Async Handle Signals' in SAS.
* Task: Async Handle Signals
* Language: SAS
%macro async_handle_signals()
* Implementation for Async Handle Signals
%let result = ...; * Initialize variable
* TODO: Implement core logic here
* Step 1: Prepare data
* Step 2: Process Async Handle Signals
%put("Done");
%mend;