Parts I-IV below are identical to the corresponding parts of version 0.97 of the Language Summary with the exception of comments of the following three forms:
This is a comment explaining the semantics of a concept or construct.
Recommendation 0.16: This is a recommendation for a change to the design.
Doubt 0.24: This is a comment about an inadequacy in the semantics.Recommendations and doubts are each numbered sequentially within sections.