MP Prism provides variations on the way that the line-number region displays breakpoints and tracepoints. In MP Prism:
It displays a B next to a line number if all processes in the current pset have a breakpoint set at that line.
It displays a b if some but not all of the processes in the current pset have a breakpoint set at that line.
It displays a T if all processes in the current pset have a tracepoint set at that line.
It displays a t if some but not all of the processes in the current pset have a tracepoint set at that line.
If there is a mixture of breakpoints and tracepoints set on the line, Prism uses the B-b-T-t sequence to determine what letter to display. For example, if a line has a breakpoint set in one process and a tracepoint set in all processes, Prism displays a b.
As in scalar Prism, you can shift-click on the letter in the line-number region to display the complete event (or events) associated with it.