1.   The use of constant prices enabled an appreciation of the physical inputs since changes in an amount signified a change in volume.

2.   These significant leaps in numbers have a certain science fiction quality and come to signify qualitative change.

3.   This could signify the change Skinner is talking about.

4.   He reiterated that approving the acquisition of Pacific Link by Hongkong Telecom CSL did not signify any change in government policy.

5.   The Clinton administration says the visit signifies no change in its attitude to Taiwan.

6.   This light work adds new spiritual dimension to his theme about transience, with the moving wheels signifying constant change.