Most actions performed via the GUI are journaled. Some examples of actions that are not journaled include:
GUI-only actions, such as:
Interrupting a solve operation
Launching help (including Quick Help and Sidebar Help)
Running the View Solver Output option from VistaTF's Solution cell
Actions taken in some data-integrated applications as described in Scripting and Data-Integrated Applications
Some graphics scene actions, such as hide body and rotation.