This visualization parses and displays the hierarchical structure of a DAX query plan, showing operators and their parameters as an indented tree. The code uses the Moo lexer to tokenize the plan text, then a custom parser builds a tree from indentation and operator tokens. It renders the tree using D3.js force simulation, with nodes representing operators and edges connecting parent-child relationships, while leaf nodes display property values like types and ranges. The visualization makes the query plan’s execution flow and data lineage immediately apparent.