Ed - I don't think so, this is truly all asa carriage control from the same set of files being exported out of a CA system, to be converted to CMOD, so all carriage control is the same (Fixed-length, blocked, ASA print-control characters). I did see this in your link:
•As an ACIF input exit. The ANSI and machine CC data sets could be concatenated together, then the file is run through arsload (and acif). The acif exit would convert the machine CC to ANSI CC, leave the ANSI CC alone that are already present, and then load this input file to OnDemand.
I am unsure if I would need to create an exit to handle standard carriage controls. This is sort of surprising to me.