What's the purpose of the cmd column in the sp_who stored procedure result set? When executing sp_who I get this

I want to know what's the purpose of cmd column. What parameter does it represent?
Thanks for your time!
From the documentation for sp_who (Transact-SQL):


╔════════╦═══════════╦═══════════════════════════════════════════════════╗
║ Column ║ Data type ║                    Description                    ║
╠════════╬═══════════╬═══════════════════════════════════════════════════╣
║ cmd    ║ nchar(16) ║ Database Engine command ( Transact-SQL statement, ║
║        ║           ║ internal Database Engine process, and so on)      ║
║        ║           ║ executing for the process.                        ║
╚════════╩═══════════╩═══════════════════════════════════════════════════╝