To set a machine-level action point, first display assembler code by selecting the menu item Window > Show Assembler or right-clicking in the Source View and selecting Show Assembler from the context menu.

Select an instruction and click the line number to set a breakpoint. Alternatively, right-click on a line number to set an eval or barrier point.

Action points set in the Assembler View have the same functionality and properties as those set in the Source View.