It looks like even though they exist and work, some of the well known communities are missing from the documentation. For example:
```trae@cr01a-vyos# set policy community-list BLACKHOLE rule 10 regex
Possible completions:
<aa:nn> Community number in AA:NN format
local-AS Well-known communities value NO_EXPORT_SUBCONFED 0xFFFFFF03
no-advertise Well-known communities value NO_ADVERTISE 0xFFFFFF02
no-export Well-known communities value NO_EXPORT 0xFFFFFF01
internet Well-known communities value 0
additive New value is appended to the existing value
[edit]
trae@cr01a-vyos# set policy community-list BLACKHOLE rule 10 regex blackhole
[edit]
trae@cr01a-vyos# commit
Archiving config...
sftp://stor01a-rh9.int.trae32566.org/int/cr01a-vyos [edit]
trae@cr01a-vyos# run show bgp ipv4 community blackhole
BGP table version is 102, local router ID is 192.168.253.2, vrf id 0
Default local pref 100, local AS 4242420666
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 192.99.85.224/29 192.168.253.0 0 100 0 (4242420668) i
* 192.168.253.0 0 100 0 (4242420668) i
Displayed 1 routes and 38 total paths
```
Above, you'll notice that even though the blackhole keyword is not listed, it still works. This makes me think the documentation for the command needs to be updated.