|Debug variables|Meaning|
|---------------|-------|
`DEBUG_DISABLE_FEATURE_RECORDER` | comma-separated list of feature recorders to disable. Specify `all` to disable all feature recorders
`DEBUG_DISABLE_DFXML` | Do not write DFXML
`DEBUG_DISABLE_TIMERS` | Do not run any aftimer (for determining overhead of running the timers.)
`DEBUG_PDF_DUMP_HEX`   | Hex dump all decompressed PDF runs to stderr
`DEBUG_PDF_DUMP_TEXT`  | Dump all extracted PDF text to stderr
`DEBUG_SCANNER_SET_PRINT_STEPS`| debug_flags.debug_print_steps = true;
`DEBUG_SCANNER_SET_NO_SCANNERS`| debug_flags.debug_no_scanners = true;
`DEBUG_SCANNER_SET_SCANNER`| debug_flags.debug_scanner = true;
`DEBUG_SCANNER_SET_DUMP_DATA`| debug_flags.debug_dump_data = true;
`DEBUG_SCANNER_SET_DECODING`| debug_flags.debug_decoding = true;
`DEBUG_SCANNER_SET_INFO`| debug_flags.debug_info = true;
`DEBUG_SCANNER_SET_EXIT_EARLY`| debug_flags.debug_exit_early = true;
`DEBUG_SCANNER_SET_REGISTER`| debug_flags.debug_register = true;
