Here’s a quote from the same document:

The following are considered null and void: the Balfour Declaration, the British Mandate Document, the UN Palestine Partition Resolution, and whatever resolutions and measures that derive from them or are similar to them. The establishment of “Israel” is entirely illegal and contravenes the inalienable rights of the Palestinian people and goes against their will and the will of the Ummah; it is also in violation of human rights that are guaranteed by international conventions, foremost among them is the right to self-determination.

…

Hamas believes that no part of the land of Palestine shall be compromised or conceded, irrespective of the causes, the circumstances and the pressures and no matter how long the occupation lasts. Hamas rejects any alternative to the full and complete liberation of Palestine, from the river to the sea.

Seems pretty clear to me.