The saturated pieces are then placed onto the surface and allowed to dry slowly.

The piece is not allowed to arrive at the same position twice.

The piece is then allowed to heat-soak until its temperature is even throughout.

The heated piece of photosensitive glass is then allowed to cool down and the process is done.

If bits and pieces of foreign matter are allowed to creep into the test tube, the results will invariably be falsified.

Extraneous pieces from the same period are not allowed.

When is a piece of evidence not allowed?

During each four-hour shift, it continues, only one vocal piece, 10 to 15 minutes in length, will be allowed.

Very often, pieces banned in one area were allowed in others for this reason.

An opposing piece is not allowed to jump over them, but friendly pieces can.