- trace-call-sites #!optional BOOLparameter
If true, show call site information in the trace, which makes it easier to see where the procedure is called from. This information is taken from the trace buffer: it shows the most recent entry in that buffer, so this only works reliably if the call sites aren't optimised away and are compiled with -d2 or higher (and -no-trace is not used).
This option defaults to #f.