What is Minecraft shader and How to use BSL Shader?

Hello to all I am new here and have various topics and information here, really good works I also have a site about Minecraft shaders. In computer graphics, a shader is a type of computer program originally used for shading in 3D scenes the production of appropriate levels of light and all for that you can download Minecraft bsl shaders 1.14.3 https://sites.google.com/view/craftstones/home