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Detail:
this block does not increase the portal count of the level, as normal blocks do. Detail Blocks can be used for small details in the level, like small pillars, ornaments, rounded arcs or other elements which would otherwise increase the portal count and building time. Because Detail Blocks do not suppress the rendering of the scene behind them, they should not be used for objects that hide much of the level - otherwise they will reduce the frame rate. Do not try using Detail Blocks as level boundaries. Detail blocks must not intersect other blocks. They are only visible in D3D mode, and ignored in 8-bit mode as well as by the collision detection. Detail Blocks can slow down lighting calculations. Standard level building rules still apply (e.g. don´t create a block smaller than 2x2x2 quants).

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