What do these terms stand for on my HTC RUU I've been tinkering around lately with my HTC desire 510 and I feel like if someone doesn't shed a bit of light on this for me I'll be going around in circles. 

I'm looking at stock ROM's for my HTC. I found a massive amount of them and I want to figure out what the following terms mean/stand for on them:

-A11, A11U, A11UL, A11CHL ?

-K44, K443 ?

-SENSE60 ?

-0PCVIMG 

As an example I'm looking at the following ROM update utility: 


  RUU_A11_UL_K443_DESIRE_SENSE60_HTC_Europe_1.51.401.1_Radio_01.02.012_U10251_39.08.40922_release_398419_signed.EXE
A11_UL is the product number for a specific hardware variant of the Desire 510.  Other examples include HIMA_UL for the m9, M7_UL for the m7, M7C_DWG for the China version, etc.

K443 is the version of software (in this case KitKat, Android version 4.4.3). Other codes you'll see here are L50 (Lollipop 5.0), JB (Jellybean), etc. 

SENSE60 means it has v6.0 of Sense, HTC's custom launcher.  I've also seen SENSE55, SENSE50, etc.

Other things indicate the carrier that the ROM was customized for, radio version contained in the RUU, etc.