Render Second Life maps from a grid rectangle or a USB notecard.
Place the legend by clicking the legend button on a free slot in the preview below.
The auto-saved GLW data row inherits the destination chosen for the render itself.
Tiles are aligned to the SL map CDN's tile grid, so the preview can include regions outside the requested rectangle — those extra regions will not appear in the final render. Each free slot is drawn as a green box (red if its content does not fit); use the buttons in a slot to place a text label, logo or the GLW legend, the button on a shared edge to combine two slots, and the split button to break a combined slot apart.