What succession rights did the Habsburgs gain through the Treaty of Pressburg in 1491?

Under the Treaty of Pressburg signed in 1491, the Habsburgs secured the right of succession to the kingdoms of Bohemia and Hungary should the reigning monarch, Vladislas II, die without leaving a male heir.12

This agreement, which was later reinforced by the Treaty of Vienna in 1515, was a significant diplomatic achievement for Maximilian I and played a crucial role in the eventual establishment of the Habsburg Danubian empire. Please note that this 1491 agreement is distinct from the Treaty of Pressburg of 1805, which was an unrelated agreement between Austria and France during the Napoleonic era.13