Programmer types?

What is the difference between "ArduinoISP" and "Arduino as ISP" in the Tools menu? I tried Googling, to no avail.

I am using an Arduino Pro Mini, IDE v1.6.1 and I uploaded Randall's ArduinoISP sketch.

Thanks.

Arduino As ISP is the one you want.

There is also a device called ArduinoISP - which is different from the ArduinoISP sketch.

Aha. Thank you. It's a little confusing, especially given the sketch name.

This is the device, I presume:

And just to be sure ...

The correct AVRDUDE parameter for programmer type would be "arduino" and not "avrisp"?