Meaning of the aptitude search output for wine-staging

I've installed winehq-staging package from winehq repo in debian 12 instead of from debian repo which I'll be using from Lutris. After that I listed what got installed with: aptitude search '?narrow(?installed,?origin(dl.winehq.org))' And this command printed out:

i A wine-staging                                   - WINE Is Not An Emulator - runs MS Windows programs       
i A wine-staging-amd64                             - WINE Is Not An Emulator - runs MS Windows programs       
i A wine-staging-i386:i386                         - WINE Is Not An Emulator - runs MS Windows programs       
i   winehq-staging                                 - WINE Is Not An Emulator - runs MS Windows programs

I'm having trouble understanding this output: 1. What does the letter "A" mean in the output? 2. What's the difference between winehq-staging and wine-staging 3. Since there are x64 and x86 bit versions installed what do the other two mean? that is what exactly do 4 of these version mean and how are they used?