First PDF is the original, second PDF is the unified version, then there's links - 4 others changed, 4 explicitly obsoleted, 12 implicitly obsolete, 707 administrative orders, 12 Constitutional Tribunal rulings, 11 previous + current unified versions, 212 patches, 14 relevant EU directives.
Example page for the traffic code https://isap.sejm.gov.pl/isap.nsf/DocDetails.xsp?id=WDU19970...
First PDF is the original, second PDF is the unified version, then there's links - 4 others changed, 4 explicitly obsoleted, 12 implicitly obsolete, 707 administrative orders, 12 Constitutional Tribunal rulings, 11 previous + current unified versions, 212 patches, 14 relevant EU directives.