Land Windows
This page describes the land related floating windows in the v1.23 Viewer software. It is part of the Floating Windows section of the User's Manual. The windows are listed here alphabetically
Abandon Land
Allows you to return land you own immediately to Linden control. You receive no payment for doing this, in contrast to selling the land to another user. This window is opened from the About Land floating window. It is available if you are the owner of the land, or an owner of the group for group-owned land.
In general, abandoning land should not be necessary. If you need to reduce your land holdings you can set a price just below the current lowest price per square meter, and get a rapid sale. This will give you some payment for it, while abandoning it does not.
About Land
The About Land page has full details about this window. It is shown here because About Land > General tab has the buttons to access the other windows.
Buy Land