1) It is clearly stated that the entire language specification is normative unless explicitly indicated as trial use (which we clearly indicate with the TU system and colored background). 2) In presenting syntax and usage, it is possible to overdo the use of formal normative language.  However, we do not deny there are cases where formal language would be helpful. We propose doing a sweep through the specification to find where formal language should be used. Here is an example: Numerical array references can be replaced with so-called “soft indexing.” In soft indexing,  [+]  is used to increment the last referenced index by 1, and  [=]  is used to reference the same index that was last referenced. When an array is empty,  [+]  refers to the first element ( [0] ). FSH also allows for soft and numerical indices to be mixed.   Will be changed as follows: Numerical array references MAY be replaced with so-called “soft indexing.” In soft indexing,  [+]  is used to increment the last referenced index by 1, and  [=]  is used to reference the same index that was last referenced. When an array is empty,  [+]  refers to the first element ( [0] ). FSH also allows for soft and numerical indices to be mixed.