What is minimum element size? When attempting to use delete vertex tool on a shape after removing so many vertices, "minimum element size" appears in the status bar. You can no longer remove any additional vertices from the shape.
The reason why is you cannot remove another vertex and have the resultstill be a shape.
For example:-Place a 4-sided shape-Use the delete vertex tool to remove vertices-One vertex can be removed making the shape a triangle, attempting to remove other vertex would no longer allow the element to be a shape but a line. This why the message appears in the status menu.