I found that these books fully explained whatever topic I had occasion to need to refer to a book for. They somehow get to the necessary level of detail but are very readable to anyone who already has reasonable knowledge of JCL. They were not written for beginners or students, they were written for people with relevant working experience. Many books spend quite a bit of time on the material which one could readily ask the person sitting at the next workstation, but omit to explain the more complex items.

Can anyone tell me whether this text is more of a college text, and if so is there a current text which is intended for people with significant jcl experience? I invite comments from readers, the author, or other authors; directed to Bernard768 @ Hotmail.com, Thanks.