In a post viewtopic.php?p=1014223#p1014223 Rex wrote the following:
All types of RouterOS, including those that have not yet been discovered from other users…
The usual ones
nil
nothing
str (string)
bool (truth value)
num (integer number)
time (time interval)
ip (ip address)
ip-prefix (ip prefix)
ip6 (ipv6 address)
ip6-prefix (ipv6 prefix)
id (internal number)
array
code
lookup
Recently discovered
op (operation)
Not discovered
apireq (api request)
exclamation
cmd
iterator
backreference
Rex, what do you mean by “not discovered”? These data types (apireq (api request), exclamation, cmd, iterator, backreference) exist, but there are no direct commands for working with them? That is, these are “internal” data types available only to the system itself?