anchor.diff:             ;;definitions
              :v-defstruct
              :v-defun
  -           
  +           :v-defmacro
  +           :v-define-compiler-macro
  +
              ;;compiler
              :varjo->glsl
   
  
positive.code:            :split-arguments
             :v-macroexpand-all
             :v-compiler-macroexpand-all
             
             ;;compile-result
             :glsl-code
             :stage-type
             :out-vars
             :in-args
             :uniforms
             :context))
  
negative.code:            :V-USAMPLER-BUFFER
             :V-USAMPLER-CUBE
             :V-USAMPLER-CUBE-ARRAY
  
             ;;functions
             :TEXTURE-SIZE
             :TEXTURE
  