I have four questions:

Question # 1: My understanding is that the drum patterns are played according to statistical rules according to the weights of each pattern on the substyle line. Yet that is not really true, and it looks like the frequency of playing a given pattern is affected by something else. I can see the possibility in playback Bar Mask, but I cannot find any reasonable explanation as to how that thing works.In short, I do not understand the relation between playing a pattern and the Playback mask.

For instance, open any style (midi or real drums), look at the first pattern of substyle A, put a crash cymbal on beat 1 of 4 and put a weight of 1 on the pattern. According to what is written in the tutorial, that should result in that pattern playing rarely. Well it appears every two beats. Try that with Jazfred and use the first A substyle pattern.
What did I do wrong?

Question # 2:. The real drums are supposed be immune from the drum pattern editor which is good only for MIDI drums(according to the chat help I got recently). Yet I can place the same crash cymbal on beat one (Jazfred). Question: Is the cymbal sound a Midi sound or a real drum sound (I cannot differentiate).

Question # 3: In the drum pattern editor of Jazfred, some of the volume numbers are circled with red squares. What does that mean, and in what way these red square differentiate that instrument volume from the rest of the non-red-square crowd?

Question # 4:. My motivation for doing all this is that I play clarinet and I often get lost when improvising. To reset myself with the music, I am trying to get a crash cymbal on beat 1 of every four bars sequence. Question: How can I modify the drum style so that it plays a single crash cymbal sound on beat 1 of every four bar? Is there any other trick I could do to force an event on beat 1 of each four bars sequence.

Any help would be appreciated.

This BB2011 is amazing and you guys deserve a hell of a lot of thanks and heartfelt recognition. I am addicted to BiaB for ten years now.

Serge

SAG