This script, much like it's ISBL counterpart CONNECTIVITY, uses the node and branch themes of the OSBL system to create a part of the input file required by naUTilus. As in CONNECTIVITY, much of this is possible because connectivity is carried over from AutoCad when converting from a .dxf file to a coverage in Arc/INFO.
For a detailed discussion on how this script determines the connectivity, see the description of CONNECTIVITY. The only significant difference from CONNECTIVITY was adding in the new "imaginary" branches created in INFLNODE.
Key Avenue commands used: