sentences:  In these the inside of the arch has a series of square-ended projections representing the joists, and inside that a curving lattice in low relief that represents the receding roof timbers of the inside of a notional building.At the bottom, a small area, more or less semi-circular, represents the far wall of the structure, and may be plain (e.g.Bhaja Caves over side galleries), show a different lattice pattern (e.g.