1: function 
2: if 
then
3: 
If a subgrid in R has been populated, 
already exists
4: Select 
from 
5: else
6: PD ¬ Construct the boundary of D
7: 
8: end if
9: return 
10: end function
| 1: function 2: if 3: 4: Select 5: else 6: PD ¬ Construct the boundary of D 7: 8: end if 9: return 10: end function |