// Comments can be added with double slashes

// A shader is defined with "shader" keyword followed by shader name
shader shader_name
{
    // Properties and stages of shader are defined within curly braces

    // The properties for this shader are specified using key-value pairs
    // Common properties include surfaceparm, cull, deformvertexes, q3map_*, etc.

    // Example properties:
    surfaceparm nolightmap
    cull disable

    // Stages of shader are defined using stage keyword
    stage
    {
        // The properties for this stage are also specified using key-value pairs

        // Example stage properties:
        texture texture_filename
        // texture is used to specify image file for this stage

        // Additional properties for this stage can include blending modes,
        // scrolling, scaling and other texture manipulation settings.
        // These can be specified with key-value pairs.

        // Example stage properties:
        blendFunc GL_DST_COLOR GL_SRC_COLOR
        // Specifies a blending mode

        tcMod scroll 0.1 0.1
        // Scrolls texture in S and T direction

        tcMod scale 2 2
        // Scales texture

        // You can have multiple stages within a shader, each with its own properties
    }
}