The idea is that you use this long URL as graphicsDir, so that the Diagram will automatically append the piece names to it (which then follow the p= with which the URL ends. And you have to set graphicsType to an empty string, to prevent something will be appended behind the piece name.
The idea is that you use this long URL as graphicsDir, so that the Diagram will automatically append the piece names to it (which then follow the p= with which the URL ends. And you have to set graphicsType to an empty string, to prevent something will be appended behind the piece name.