gradle test -PtestngGroups=Network
```
-Available groups are Functional (default), Network, External.
+Available groups include Functional (default), Network, External.
+
+#### Excluding some tests
+
+Some of Jalview's Functional tests don't pass reliably in all environments. We tag these tests with a group like 'Not-bamboo' to mark them for exclusion when we run tests as part of continuous integration.
+
+To exclude one or more groups of tests, add them as a comma separated list in testngExcludedGroups.
+
+```bash
+gradle test -PtestngExcludedGroups=Not-bamboo
+```
### Installer packaging with *install4j*