1.   To underline the gravity of his point, he solemnly handed the jurors three pictures of the test tube, taken from different angles.

2.   Underlining the gravity with which authorities view the current situation, President Clinton decided to speak out Tuesday.

3.   His comments underlined the gravity of the crisis since the moderate president was considered the most open to compromise with ethnic Albanian leaders.

4.   His comments underlined the gravity of the deadlock.