What is the naming convention of the Maintenance Plan backup files and how does the delete step w (4354272)

What is the naming convention of the Maintenance Plan backup files and how does the delete step in the LiteSpeed Maintenance Plan work?

The backup convention of the LiteSpeed maintenance plan backup is (the default extension of backup files created by LiteSpeed is ".BAK"):
Full and Differential backup:
[Database Name]_db_<datetime>.[extension]
Transaction Log backup:
[Database Name]_tlog_<datetime>.[extension]

Delete process would delete the files older than the -DelBkUps parameter specified by the maintenance plan, located in the maintenance plan backup directory and matches following naming convention:
Full and  Differential maintenance plan delete process
[Database Name]_db_{ANYTHING.EN}.extension]
Transaction Log maintenance plan delete process
[Database Name]_tlog_{ANYTHING.EN}.extension]