$MASKS

Layer masking is a technique commonly used in graphic design and image editing. It allows you to hide or reveal parts of an image or graphic without permanently deleting them. In the context of GIS (Geographic Information Systems), layer masking can be applied to symbology to show or hide specific features on a map without altering the underlying data. It's a powerful tool for customizing the display of data layers while maintaining their original structure and content.

I am just someone who does some teaching, some research, and some writing. But my dream is still
 alive.