What does this hashcat outupt mean?

[led5150]

hashcat output:

Code:

Applicable optimizers:
* Zero-Byte
* Early-Skip
* Not-Salted
* Not-Iterated
* Single-Hash
* Single-Salt
* Brute-Force
* Raw-Hash

What does these lines of output mean?  Are they optimizers that can be applied?  or that have been applied?

If they haven't been applied, how do you apply them?

Thanks!

Matt