Well, I think it means like this for AML/ML .. AMR/MR:

Click image for larger version.  Name: AML.jpg  Views: 3252  Size: 69.3 KB  ID: 28846

Indicating he could play other wing..
Now, I know I've played an AMR and also an AML OOP like you say, with decent result. Also I've played a DC in a DMC spot.