It's not "a part of the command", it's just the help file.
To attack 3DES set "-m" switch to 14100
Example:
where wordlist contains a list of passwords and hashfile contains you hash(es), where a sample hash looks like 37387ff8d8dafe15:8152001061460743
To attack 3DES set "-m" switch to 14100
Example:
Code:
hashcat -m 14100 wordlist hashfile