None. Horses are not known to use operating systems nor computers for that matter.
Know your roll!"
A:I don't know,Alaska guy and tell you
Cell shading.
Roll them into a tire and call it a Goodyear.
Ralph Neighder!
A lawyer.
With the proper al-gor-ithms
A computer with a lot of bites !
It doesn't matter what you call him, he isn't coming.
What's the matter You look flushed!"
A T-Bone!!!!
Fi-Do!
The operating system
Unix