This allows you to browse through the weapons, decorations and player models available to you. As far as I am aware you cannot export the meshs for the models.

The drop down lists the meshs available to you (shown is the Unreal 1 8-Ball rocket launcher).

Hold down the left-mouse button and move the mouse to zoom in and out.

Hold down the right-mouse button and move the mouse to rotate the mesh.

The list box shows the different animations for each mesh, along with the number of frames in each animation. Youcan choose an animation and then press Play to play the animation. Press Stop to stop the animation.