3 questions:

1. When should I use sketch vs. feature linear (or circular) pattern?

2. How can I make an array of holes, say 5 by 4? I can make a straight line, and see in the menu an option for Direction 2, but it's inactive. I assume that's how an array would be formed.

3. When making a circular sketch pattern of holes, an extra hole appears in the center. For instance, if I specify 8 holes, I get a circle of 8 holes plus a bonus and unwanted hole in the center. I've been able to successfully avoid this once, but don't know how I did it.