Patterns can be purchased to work in conjunction with EQ5, Dear Jane (a stand alone product), and EQ 6...I just bought Farmer's Wife and also received Dear Hannah as a gift. They work with the software I already have. I'm sure other versions, too but these are the ones I'm most familiar with.
It is filled with ready to use patterns if you go under the library. As you add compatible patterns, they pop up as well. You can easily change block sizes once you choose a block.
However, a pattern that has been designed by someone else that does not offer an EQ compatible CD is probably copyright protected.