Query Environment at the End of BGA Footprint Name

Not sure what the intention is for footprints of BGAs but I was under the impression there is (or was) no environment for BGAs and this is indicated in in the "FOOTPRINT NAMING CONVENTION" for Standard SM Components" PDF.

Ball Grid Array’s ......................................................................... BGA + Pin Qty + C or N + Pitch P + Ball Columns X Ball Rows _ Body Length X Body Width X Height

The Create Footprint dialogue adds an environment letter at the end of the footprint name though which I wasn't expecting to see.

I know the copper pad has no difference between environments but depending upon what the user has picked for courtyard, silkscreen line width, RefDes height etc. this could be applicable if this is the intention.

Also, is that an errant apostrophe in Array's?  I'm not sure if the Arrays own the balls but my English isn't great.  I lent my copy of Eats Shoots and Leaves to a Scouser so it's little wonder I didn't get it back .

Thanks.

3-Tiers on BGA's only affect these items in the library parts -

1. Silkscreen Line Widths
2. Reference Designator Heights
3. Local Fiducial Sizes

3-Tiers on BGA library parts do not affect these items -

1. Pad Sizes
2. Placement Courtyard Excess
3. Assembly Outline Line Width
4. Collapsing or Non-collapsing Ball
5. 3D Model Outline