curtain as door Curtain as Door / Drapes ( two in one via orientation ).

[The Plum Gate]

Used as a door in the upright configuration*, as one could use a curtain for the purposes of room perimeter calculation. Used a drapes when rotated. Cannot be walked on top of. Passive to all liquids or gasses, not intended for space exposure specifically. Some material considerations... seamlessly connects to itself ( think crown molding, or tile to tile textural flow ). May keep some critters for passing by - flying ones, perhaps.

• Plastic - Clear, allows passage of light.*
• Reed Fiber - decorative effect, blocks light - orientation specific*.
• Ceramic - neutral decor, acts as insulation ( to a degree ), fire resistance ( not yet a thing, but hey )

*So upright curtains could act as a 'door' - allowing passage of elements while delineating room borders. They would have speed of passage change as opposed to tiles ( so passage speed decrease like with any closed door, but perhaps not as significant - ie, no run speed bonus vs tile). They could just be a building you put can anywhere except space. If open doors don't have the same runspeed as regular tiles or the material brethren, then they probably should.