Have you every been in a situation where you have had to execute a test that you did not create or you were not involved in the project at the being. You could use a walk through or in the least more information on what this test is about, how each step will interact with the application, it might be a bug your retesting. It could even be an exploratory test that someone had not created a true test case with steps. Test Manager during run time has a handy feature that lets you preview a step or steps.
See how and examples:
Select a step – any step within the test click on the Play dropdown arrow and select Preview
Here is an example of selecting a shared step for preview.
Here is an example of a step with multiple lines (see blog: Microsoft Test Manager–test case multi steps tool) and a parameter.
Last an example of a exploratory test case – you got to like this one.