UDMF: What's in the "Doom" namespace?

[AresUII]

Per https://www.doomworld.com/eternity/engi ... udmf11.txt:
"
The "Doom" translation type... is considered to
represent the final fork of the v1.9 Doom engine, and therefore it includes
all line types added in DOOM II. It is also additionally considered to
include all specials defined in the BOOM and MBF source ports. Implementors
who support BOOM linedef types can handle these in the normal manner; ports
which do not support them should zero or otherwise ignore the offending
specials.

Documentation of the precise meanings of these standardized namespaces will
be provided in separate documents.
"

So what specials, parameters, flags &c. does an MBF- and UDMF-compatible engine expect in the "Doom" namespace?

For example, is it legal for door specials to have separate light tags as in ZDoom?

[ramon.dexter]

Legal? What do you mean?

[boris]

The "doom" namespace uses the regular Doom/Boom line specials, not the parameterized Hexen ones. So for example if you want a regular door you have to use special 1.

Boom actually has a light tag functionality, see https://soulsphere.org/projects/boomref/#sec1.2

Legal? What do you mean?

If they can go to jail for using the wrong specials, obviously.

[ramon.dexter]

Why would they go to jail for using wrong line specials?

[phantombeta]

Why would they go to jail for using wrong line specials?

It's a joke. "Legal" in this context means "in accordance to the specs".

[ramon.dexter]

I get it

[AresUII]

Boom actually has a light tag functionality, see https://soulsphere.org/projects/boomref/#sec1.2

So does that mean there's no possibility for a remote door with tag A to change the light level in another location B on its own?

[Professor Hastig]

You need more than one argument for that, but Doom/Boom format only has one, namely the 'tag' value.
So it's either the door sector's tag or the light sector's tag, but not both at the same time. Boom only allowed the light tag on non-remote door types because it had no other choice.