I am not sure what it's called in English - anyway I hope this helps a wee bit.

Sheila

Componentes clave de la escenotecnia

Escenario inferior
Permite preparar simultáneamente hasta 3 grandes escenografías completas.

Con el sistema llamado "Paternoster", estas escenografías se pueden ejecutar con las plataformas principales, 4 en el escenario principal y 5 en la chácena, y con las 4 carras, en función de las diferentes necesidades. Además, también se pueden crear  niveles continuos de escenario desde el proscenio hasta la chácena, p. ej. durante los entreactos.

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Note added at 2002-08-19 18:37:26 (GMT)
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I don\'t know if this site will be of any use, but I hope so, Nikki:-)

http://www.highschooldrama.com/DramaOneNotesExercises/Theate...




Theater Terms
 
Four types of theater space
1. Procenium - “Picture frame type of theater”
2. Thrust - Three sides (sort of like a catwalk)
3. Arena - Circular
4. Created Found Space. (Any space that is out of the ordinary, i.e. parking lot,
    stairs, campground, shopping mall, etc.)
 
There are two types of theater seating in a Procenium theater:
 
1.  Continental - Wide spread. Isles are found only on the sides.
2.  American - Seating is narrow, and there is an isle up the middle as well as the sides.
     (Both are raked seating. This means the seating is sloped up.)
 
Other Procenium Terms That Can Be Found:
1     Apron - In front of procenium, covers orchestra pit. It is an extension of the
       stage.
2.  Orchestra Pit – Area below the stage where the orchestra plays its music.
3.  Fly Gallery - area where one raises & lowers drops.
4.  Fly loft - area high above the stage were drops are stored.
5.   Grid - Metal wires used to fly the drops & battens.
6.  Batten - Metal pole in which drops and drakes are hung.
7.  Counter Weight System - uses weights to ease the lowering and rising of fly
     material.
8.  Rope lock - locks the ropes.
9.  Stage drapes - curtains used to mask things behind the scene.
10. Grand Drape - Main curtain.
11. Grand valance - Hides top of procenium.
12. Legs - (Vertical - a drape that shields.)
13. Teasers - (Horizontal drapes used to hide battens, wires,etc.)
14. Sky Drop - Muslin or canvas for upstage. This was used for beauty.
15. Fire Curtain - If dropped it will separate the stage from the audience.
16. Green Room - Room where actors get ready.
17. Balcony - Seating above the floor.
 
Long ago, the stage itself used to be raked (sloped up) so that the people in the back could see the actors. That is where we get the following terms:
(Be sure all students physically understand the stage locations.)
 
 
Up Stage Right         :    Up Stage Center            : Up Stage Left
 
Center Stage  Right   :    Center Stage                 : Center Stage Left
 
Down Stage Right     :    Down Stage Center        : Down Stage Left
 
Audience
 
 



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Note added at 2002-08-19 18:44:59 (GMT)
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I think that chácena MIGHT be postscenium and procenio procenium. I am not sure, it\'s just an idea based on what I\'ve seen in the websites I cite here (esp. the first one \'desde el proscenio hasta la chácena\'. However, I might well be wrong.

Good luck!

Sheila
 
http://www.sevillaonline.com/palenque/tecnico.htm

There are some pictures here.

chácena o post-scenium

http://onlinedictionary.datasegment.com/word/Postscenium/
Postscenium \\Post*sce\"ni*um\\ (?), n. [L., fr. post + scena a scene.] The part of a theater behind the scenes; the back part of the stage of a theater.