What causes a FAP file to be loaded into memory?

Several things cause FAP files to be loaded into memory. For instance, setting the LoadCordFAP option to Yes, or using the CheckImageLoaded or TextMergeParagraph rules instruct the system to load the FAP file into memory. In addition, some of the grouping and message from extract rules also cause a FAP file to be loaded into memory, as does the use of the CopyOnOverflow option.