First, perform the following steps:

1. run make from the tangent directory. This will compile the C++ program called mathindex.
2. Add the tangent-v031 top-level directory to your PYTHONPATH.

1. Create a directory containing only MathML files. Make sure they end with the extension .mml. The .pmml extension is not currently supported.
2. Create a file that contains the full paths of each of the MathML files. One path per line. In what follows, assume this file is called $EQ-PATHS-FILE.
3. In the config file named hopper.cntl, change the doc_list line to point to the $EQ-PATHS-FILE you created above.
4. From the tangent directory, run python3 index.py hopper.cntl to create a database of symbol layout trees (SLTs). These trees will be written to tangent/db-index/.
5. Write the tuples for all of the SLTs to a file $ALL-TUPLES. From the tangent directory, run: cat db-index/* | ./mathindex.exe -v 2> $ALL-TUPLES
6. (DLMF-only) Organize the tuples into the original directory structure, with 1 directory per chapter, and 1 file per equation. Assume you want all chapters directories in $DLMF-TUPLE-DIR From the top-evel tangent-v031 directory: python hop-postProcess.py --eq_paths $EQ-PATHS-FILE --all_tuples $ALL-TUPLES --outdir $DLMF-TUPLE-DIR