convert buildParentPage to accept a list (which for now is being sliced from the children List just before the call) rather than indexes into the children list.  so buildParentPage can use List.iter.
convert buildParentPage to accept a list (which for now is being sliced from the children List just before the call) rather than indexes into the children list.  so buildParentPage can use List.iter.

ericsink/LSM,ericsink/LSM