Explanation of counter codes

[blelump]

Hey,

studying the table from section 4 carefully, I found the codes that would require some more explanation. I mean these ones:

-U## | Count of qualified Base64 groups or primitives in message data | 4 | 2 | 4
-V## | Count of total attached grouped material qualified Base64 4 char quadlets | 4 | 2 | 4
-W## | Count of total message data grouped material qualified Base64 4 char quadlets | 4 | 2 | 4
-X## | Count of total group message data plus attachments qualified Base64 4 char quadlets | 4 | 2 | 4
-Y## | Count of qualified Base64 groups or primitives in group. (context dependent) | 4 | 2 | 4
-Z## | Count of grouped material qualified Base64 4 char quadlets (context dependent) | 4 | 2 | 4

and probably some more given in lowercase:

-c## | Count of config traits (each trait is 4 char quadlet (configuration trait list) (c)

1. Would -U## count the amount of ie. -F## groups? Is it a more generic version of -A##, -B##?
2. Could -V## be basically used at the beginning of the example given at the end of section 4 for framing?
3. How is -W## different to -V##?
4. How is -X## different from the previous two?
5. How is -Y## different to -U##?
6. How is -Z## different to -V##?
7. What are config traits given in -c##?

[blelump]

@SmithSamuelM bump