It generates a code for a batch file. Batch files are files with the extension .bat which you can create with Notepad from Windows. Everytime you open the file it performs certain arctions like copying and deleting files and folders and even shutting down or rebooting the computer.
Most small businesses therefore do not issue checks with the length of time the check is valid printed on the face of the check. If your company writes a check, someone legally could attempt to cash it 10 months from now or in 18 months. Although banks can refuse to process checks that are over six months after the date on the check, rarely do the processors look at the date on the check.
The check was 16 months old, which is what is known as a stale dated check. As I have been told, checks older than 90 days are never supposed to be cashed or credited. When I spoke with the bank manager at Sovereign Bank, he said he was really shocked, that cashing a 16 month old check was, as far as he knew, illegal.