Below is part of an abstract for a routine. This display is at the level of basic blocks in the program. The type of block is shown in the "Operation" field, with the name of the operation indented according to the current control structure level. MPI operations are highlighted (see the MPI_WAITALL in the example below). The "File/Line" field shows the original file name and line number. You can just click on the line to see the corresponding source code in the source code browser; this can help navigate quickly through large procedures.