"this much", not "this must" 

1- trigger_multiple: I wrote a message, and, how I can use the INTRO button for the message? When press intro in TB the message don't get it.

2- Texture offset: what's up with the QUAKE, NORMAL, HARD textures? I changed the scale and the offset for the design, but when I test the map appears misaligned. 

_@newbe : map loads perfect in TB1.

-@JB : if your trigger_multiple has a brush with the clip.tex
you don't need an intro by way of trigger_touch. Just make sure you end the message with a "n" option and has not more then 6 or 8 words. 

"\n" 

Make sure you use the latest build. There was a bug with entity properties that I fixed yesterday. 

That actually made things worse... The doors still don't work, and now I can't edit the entity properties at all.

Should I post this on github, or am I doing something stupid? 

Lol, I mean said that the INTRO keyboard button: I press it, and after, the message, in process of writing, the message don't gets this space down and message in game appears outside the screen, for write enough words.

I need how to write plus two verses in a message(Trg_multiple). 

If so, do as MadFox said

message "line 1 \n line 2" 

Metl, Jackhammer produced that "angles" entry when I changed door's orientation in editor. That door wasn't working, but did work when I set that. 

I don't dominate the english, I know some words but not all. :s 

"Deedouble" I want mean 

the mad fox jumps over the langu aged dog. 

Ai don't understand your chist, HBO 

@-johnison: I'm joking. Half of the time I don't know how to handle another language either. Reason I use Google translate, nevermind. :P 

yes I know, In my country we change the names to another similar for joking,
"natgeo-HBO" ;D 

how I do a teleporter(portal) to select difficultys? 

key: message
value: 0 - 3 (easy - nightmare) 

Ok, thanks. 

john romero released all the map sources a little while ago:
http://www.moddb.com/games/quake/addons/quake-map-source-files

while i would not recommend them as a study in how to do brushwork, you can see how they set up all the entities to do what you saw in the game. 

Thanks, that would been helpful for me. 

Anyone know of any hacky workarounds to get a .mdl to light up with a different light level to what's underneath it? 

Is it possible to use skin key (or any other hack method except making a mod) to assign texture from my map's bsp file? 

Less hacky, but annoying to set up: configure a tightly focused light (high wait, high brightness / strong antilight) so only affects one lightmap sample, and position this at the entity origin.

If that would still be visible: Make a sunken pit under the model with the desired light level at the bottom, cover it with a func_wall to hide it (I forget if monsters will walk on that?) 

Only support forced light settings on brush entities? 

Supporting minlight on func_detail/func_group would be doable, just messy to implement since qbsp has to do part of it.