Joined: 23 Nov 2006 Posts: 19270 Location: Inside the Matrix
I believe your question is more about the JCL than IEBEDIT. . . The jcl posted simply copies the "input" to the "internal reader". If you use the forum SEARCH feature, there are multiple topics about the internam reader.
At the top of the page is a link to "IBM Manuals" among which is the "IBM JCL Utilities Guide for DFSMS". This manual has the documentation for IEBEDIT.