Robert, In the first paragraph of section 1.4 you that DFDL is used to describe XML files. I thought this was not the aim of DFDL as standard XML Schema can be used to describe XML files. In the third paragraph of section 1.6 you say that 2 DFDL Schemas could be used, one to raad the data and trhe second to write it. If selectors are used this would be possible using a single DFDL Schema. In section 2.3.1.1 you discuss specifiying multiple inputs. As this has not been discussed in any detail before I think a new entry is required on the issues list. In the parsing example in section 6 you say in paragraph 3 that layer 2 reads bytes from layer 1 until one string has been read. How would you know that you have a one string for layer 2? In reality I don't think layer 2 is necessary. I think what you describe as layer 3 would read bytes from layer 1 as characters until a comma was found. This would then indicate that this was the end of the string for layer 3. Regards, Geoff Judd Websphere MQ Integrator Development IBM UK Ltd Hursley Telephone: +44-1962-818461 E-mail: JUDDG@uk.ibm.com "Robert E. McGrath" <mcgrath@ncsa.uiuc.edu> Sent by: owner-dfdl-wg@ggf.org 18/10/2005 15:48 To dfdl-wg@gridforum.org cc Subject [dfdl-wg] New draft of DFDL primer Greetings, I have been plugging away on the primer document. There are still major holes which await development of the specification and/or input from others. This draft include considerable revisions based on what I learned from you all in Boston. I attach my current draft here. It is also available at: http://verbena.ncsa.uiuc.edu/DFDL -- --- Robert E. McGrath, Ph.D. National Center for Supercomputing Applications University of Illinois, Urbana-Champaign 1205 West Clark Urbana, Illinois 61801 (217)-333-6549 mcgrath@ncsa.uiuc.edu [attachment "new_primer_18_oct_05.doc" deleted by Geoff Judd/UK/IBM]