Expanded documentation

README.md

@@ -59,6 +59,22 @@ pytest tests/sinqMotor/turboPmac/
 ```
 This runs all Turbo PMAC tests within the directory.
 
+To run a specific test file:
+```console
+pytest tests/sinqMotor/turboPmac/lin1/test_common.py
+```
+
+And to run a specific test "test_something" within this file:
+```console
+pytest tests/sinqMotor/turboPmac/lin1/test_common.py -k 'test_something'
+```
+
+Pytest normally suppresses stdout (which is where Pythons `print` writes by default).
+To show it, use the `-s` flag:
+```console
+pytest -s tests/sinqMotor/turboPmac/lin1/test_common.py -k 'test_something'
+```
+
 ## Running custom scripts
 
 The test framework can also be used to run custom scripts. The file