StackOverflow https://stackoverflow.com/questions/50619182/canvas-children-transparency

StackOverflow https://stackoverflow.com/questions/65944443/using-svg-file-not-inline-svg-as-css-mask

StackOverflow https://stackoverflow.com/questions/16974552/css-masking-webkit-how-does-one-code-this-circle

StackOverflow https://stackoverflow.com/questions/34585582/how-to-mask-the-specific-array-data-based-on-the-shapefile

StackOverflow https://stackoverflow.com/questions/15494541/how-use-one-one-sprite-as-mask-for-other-if-they-in-different-containers-with-d

StackOverflow https://stackoverflow.com/questions/623511/masks-and-transparency

StackOverflow https://stackoverflow.com/questions/29565636/c-find-non-zero-elements-of-cvmat-not-working-as-intended

StackOverflow https://stackoverflow.com/questions/1644916/vector-drawing-tool-for-iphone-development

StackOverflow https://stackoverflow.com/questions/79436783/adobe-photoshop-js-scripting-question-inserting-vector-masks-from-json-to-photo

StackOverflow https://stackoverflow.com/questions/72834859/python-to-convert-lines-in-an-image-to-multilinestring