Wrote validation sections.

Documented the mailing list. ...

Documented how the program handles illegal initial namespaces.
Documented the semantics of LegalVals in the case of the NAMESPACE variable.

Documented the predefined variables.

Created symbolic value PERIOD. ...

Changed predefined NSSEP to PERIOD.

Added startup check to make sure initially passed namespace is legit.

Fixed bug that prevented environment variables from being derefenced. ...

Removed unnecessary validation checks in variable assignment code.

Further clarification of namespaces.

Insured that [NAMESPACE] always relative to root namespace.

Reorganized code to use a common symbol name validation routine. ...

Wrote logic to explicitly check for illegal first character in symbol names.
Wrote logic to check symbol names for illegal characters throughout.

Combined reserved and predfined symbols into a single data dictionary.

Implemented check to prevent namespaces with leading ENVIRO character.

Finished section on namespace processing.

Fixed a number of subtle bugs involving namespace handling for ...

variable names and references.

Started fleshing out the details on lexical namespaces.

Minor cleanups.

Noted that reference delimiters not permitted in variable names. ...

Clarified that attempts to nest variable references causes an error.

Added check to make sure a variable name does not contain DELIML or ...

DELIMR.

Cleaned up all manner of bugs having to do with variable names ...

containing whitespace and references involving them.

Added explicit check for nested variable references.

Documented indirect variable addressing.

Minor edits and formatting cleanup. ...

Noted that NAMESPACE is a pre-defined variable used internally.
Noted that user variables cannot begin with a period.

Explicit use of InitialSymTable in API call. ...

Reformatting of API call for readability.

Added sections on namespace processing. ...

Formatting cleanup.
Changed API argument from InitialSymTbl to InitialSymTable.

Changed API argument from InitialSymTbl to InitialSymTable.

Added code to verify that LegalVals is a list for each variable passed ...

in the initial symbol table.

Added to to insure that the initial namespace passed by the calling
program is also present in the NAMESPACE LegalVals list.

Began writing section on configuration language.

More formatting and cleanup.

Reformatting and cleanup.

Finished Programming section - added detail on how to construct an ...

initial symbol table.

Reorganized and reformatted portions of document.

Changed nonew to nonewvar and added documentation for nonewns.