[SR-Users] flags documentation

Hi,

I have this set up in my configuration boilerplate:

-- flags DUMMY : 1, PDD_DAMPEN : 2, PROXY_MEDIA_SET : 3, #!ifdef WITH_NAT_TRAVERSAL SIPPING : 4, #!endif DUMMY2 : 12 --

I then use these aliases in transaction flags, e.g. setflag(PDD_DAMPEN).

But I can honestly say I don't remember how I arrived at this approach. I wrote it somewhere in early 3.x days. However, when I look at the core documentation for the 'flags' declaration, all I find is:

http://www.kamailio.org/wiki/cookbooks/4.4.x/core#flags

Or namely:

-- flags

Alias name: bool --

And there is no entry for "bool". So, I couldn't have possibly arrived at this usage from the documentation.

Can anyone help me reverse-engineer this historical phenomenon? And, given that the documentation doesn't support it particularly, is it still an encouraged practice? Or should one use #!defined constants instead, as in the stock config?

Thanks,

-- Alex