The tool output may hold some information like line numbers and columns. Here you can enter a formatting string to enable the editor to retrieve this information. You can use * as wildcard and the variables %F - filename, %L - line, %C - column.
E.g. you may have an output line like:
   line 1235 column 12 : ERROR: <some info>
The formatting string should be:
   line &L column %C. You can also use %F for file name and it is possible to use the asterisk (*) as a wildcard.