# Environment Variables

| Name | Default | Description |
| ------------------------------------|:---:| --- |
| NGRAPH_ENABLE_REPLACE_CHECK | |
| NGRAPH_ENABLE_TRACING | |
| NGRAPH_ENABLE_VISUALIZE_TRACING | |
| NGRAPH_FAIL_MATCH_AT | |
| NGRAPH_GRAPH_REWRITE_RERUN_DYNAMIC_CHECK | |
| NGRAPH_GTEST_INFO | |
| NGRAPH_PROFILE_PASS_ENABLE | |
| NGRAPH_PROVENANCE_ENABLE | |
| NGRAPH_VISUALIZE_EDGE_JUMP_DISTANCE | |
| NGRAPH_VISUALIZE_EDGE_LABELS | |
| NGRAPH_VISUALIZE_TRACING_FORMAT | |
| NGRAPH_VISUALIZE_TREE_OUTPUT_SHAPES | |
| NGRAPH_VISUALIZE_TREE_OUTPUT_TYPES | |