The mailing list for listmasters using Sympa

[Russ Kepler <address@concealed>]

I'm confiused by the message reception options I see in 5.2.1.  From the 
command documentation there are these options:

nomail |  digest |  summary |  notice |  txt |  html |  urlize |  not_me 

It seems to me that these are really specifying combinations of several modes:

receive mail (on/off)
don't send my message to me {not_me} (on/off)
mail frequency (message/digest/(summary?))
mail encoding (html/txt(/notice?))
attachment encoding {urlize} (on/off)

What I can't tell from the list is if these are maintained in combination - 
is 
it possible to get a text-only digest?  html-digest with urlized attachments? 
 
digest of notices (that must be a summary). Text-only with attachments 
urlized?

 The reason I ask is that I have some users who would like to see a text-only 
digest and some who don't care and I don't see how to do that.