anchor.diff:  on the other hand, enable you to specify shader stages from the command line
   and within the source file. Possible ``stage``s for them are also listed in
   the following table. Details about `-fshader-stage=` can be found in
  -<<option-f-shader-stage,its own section>>.
  +<<option-fshader-stage,its own section>>.
   
   [[shader-stage-selection]]
   .Shader Stage Selection
  
positive.code: 
  This option affects all compiled shaders.
  
  [[option-f-shader-stage]]
  ==== `-fshader-stage=`
  
  `-fshader-stage=<stage>` lets you specify the shader stage for one or more
  
negative.code: 
  glslc [-c|-S|-E]
        [-x ...] [-std=standard]
        [ ... options for resource bindings ... ]
        [-fhlsl-offsets]
        [-fentry-point=...]
        [-flimit=...]
  