time ( quot -- .. time )
Times how long it takes to execute a quotation, leaving a string atop the stack describing the time
print-debug-trace ( -- )
Prints the extant debug trace
clear-debug-trace ( -- )
Clears the debug trace
cpu-pprof ( path quot -- )
Runs the quotation in a PPROF session, saving the data to the file at path
dump-defined-words ( -- )
Dump all of the currently defined words to STDOUT
show-locals ( -- )
prefix: ~ ( name -- quot )