Files with cmdx extension can be occasionally encountered as old labels from the mac version of Design Pro (2005) software.
There is one other file type using
the CMDX file extension!
.cmdx - Clinical Map Document
CMDX file extension - Design Pro (Mac) label design
What is cmdx file? How to open cmdx files?
File type specification:
File extension cmdx was in the past (around 2005) used in the mac version of Design Pro software from Avery.
Much like similar other formats from Avery, these files contain label designs.