Nodraw texture?

Hi again. I wanted to ask if there exists a texture in Half Life 1 similar to the "nodraw" texture in the source engine that stops faces using said texture from being rendered. I get very paranoid that my maps will be very slow and messy with faces that the player can't even see having textures.

If there isn't a nodraw type texture, is it possible or necessary to make one?

Use sky on none entities and for solid entities use a blue_255 texture and set the entity to solid, render amount 255. There may in fact be a ZHLT texture that does the same thing.