A local team uses Bible modules to produce monthly lectionaries. Their translation uses custom versification - most books follow Original versification, except for Psalms, which follow English versification.
The Bible module has, for example, \ref PSA 84:1-4. However in Preview Output view, this changes to PSA 84:0-3. This carries over to PTXPrint as well.
The custom.vrs has the line
PSA 84:0-12 = PSA 84:1-13
Is there a setting we need to change, or is our specification incorrect?