A single number has a hidden architecture: its digits can bunch into pairs, those pairs bunch again, and the bunching climbs to one root. 234 becomes 2+3=5 and 3+4=7, then 5+7=12 - a full digit tree growing out of one line.
Create a Number Digit Tree unfolds the digits of a number into a merging pyramid. Merges always join adjacent sums (or collapse to digital roots on request), so every batch number becomes a labelled text-art tree showing exactly how its digits compound.