Flammable gas found in the relay indicates some internal fault such as overheating or arcing, whereas air found in the relay may only indicate low oil level or a leak.

The chart in Figure 1 is an example of the charted free memory after a GC cycle in an application with a memory leak (the chart was using an internal IBM tool).

An internal inquiry into a leak of confidential information by a director pried into directors' (and journalists') telephone calls, using methods that were at best unethical and possibly illegal.