./"checks the program stack

.DT
break_point
Discworld driver help
break_point

Name
.SI 5
break_point() - checks the program stack to make sure it's valid

.EI
Synopsis
.SI 5
void break_point();

.EI
Description
.SP 5 5
This efun checks to make sure that the driver has kept the stack
correctly.  The currently running program will bomb if the stack
is incorrect.  Useful for debugging the driver.
.EP
