Top two items are popped from the stack and 'Less Than or Equal' comparison is performed. 0 or 1 is pushed back to the stack where 1 indicates true.

See programming note for comparing unlike types

# Compares numbers to 50. 
# Pointless, in programming, but here to illustrate a point. 
100 50 lte 		# False, 100 is more than 50 
45 50 lte 		# True, 45 is less than 50 
50 50 lte 		# true, 50 is equal to 50

A B lte
If A is less than B, TRUE
If A is the same as B, TRUE
Otherwise FALSE