Remove QToolBlockUI which was just glue and do the whole thing in C#, remove some resulting dead code in CToolBlock Remove redundant mapdoclib stocksolids Hammer: Entity tool uses Block tool to place solid meshes w/ listeners, same way nav meshes are placed. https://files.facepunch.com/matt/1b1011b1/sbox_CsQvkTwpm5.png Mark these transform operations as internal, let's not just blindly expose C++ ways to the public API