First 5 lines are mangled

The original 4th line refers to an undefined element 'Lexical Elements Character Sets'.
The original 5th line ends the original 2nd line.
The following lines look like a repetition of the first 5.

In the original line 19, there is a reference to an "Appendix A"; it is unclear what the content is.

There also is a repetition of fragments on lines 194-379 (the end).
In my opinion they must be removed.