1.   He failed to recognize, or understand, the subtle change in emphasis which had taken place.

2.   Rather it points to the fact that there has been a subtle change in the composition of the teaching force.

3.   We know from many studies that quite subtle changes in tasks can significantly alter their difficulty level.

4.   It was mainly due to a subtle change in Francis.

5.   A subtle change in psychology.

6.   Although his handshake was firm and his smile warm, she recognised a subtle change.

7.   And there are subtle changes in his personality.

8.   And, in a subtle change, the Trojans coaching staff might be as eager to play some of its youngsters as any recruiting zealot.

9.   Any subtle change in behavior patterns can be a tip-off.

10.   As a result, that memo contained subtle changes in tone and emphasis that amounted to an endorsement of a more aggressive approach against the Davidians.