Delete Variable

--VARNAME

Deletes the variable with name VARNAME (make it as if the variable was never assigned).

42 ->TheAnswer 
<-TheAnswer Trace # prints out 42 
 
--TheAnswer # delete variable
 
if (-?TheAnswer) # checks if the variable exists
    "We have the answer" Trace
else
    "We do not have the answer" Trace
endif