Where
Installation guide
Rev.: 8269453

Problem
There is unclear sentence "The JBoss Core Services package of Jsvc can be used to run JBoss EAP as ... ". The relation JSVC and CoreServices is different. Core Services contains package with JSCV.

Solution
Replace sentence with smth. like: "Jsvc is one of the component of product [link ]JBoss Core Services[link] and it's purpose is to run JBoss EAP as ... "