irChart - What are the primaryTests and their options?

The primaryTests parameter requests one or more tests for special causes for the primary control chart. The tests value can be one or more of the following:
- test1: When set to True, requests a test for one point beyond Zone A (outside the control limits). Default: FALSE.
- test2: When set to True, requests a test for nine points in a row on one side of the center line. Default: FALSE.
- test3: When set to True, requests a test for six points in a row steadily increasing or decreasing. Default: FALSE.
- test4: When set to True, requests a test for fourteen points in a row alternating up and down. Default: FALSE.
- test5: When set to True, requests a test for two out of three points in a row in Zone A or beyond. Default: FALSE.
- test6: When set to True, requests a test for four out of five points in a row in Zone B or beyond. Default: FALSE.
- test7: When set to True, requests a test for fifteen points in a row in Zone C (above and below the center line). Default: FALSE.
- test8: When set to True, requests a test for eight points in a row on both sides of the center line with none in Zone C. Default: FALSE.