Added references to earlier standards papers by B. Hildreth [Hildreth94], [Hildreth98].

Cleaned up formatting in the element descriptions found in Section 8.2, “Element descriptions”; corrected the grammar in the BNF descriptions of the major elements within this text.

Changed the description of bounds element in the DTD to remove out-of-date reference to [un]griddedTable[Def|Ref] since this is no longer supported. In the reference manual, removed a misleading second bounds element for the uniformPDF element case and added notes to imply the presence of PCDATA (either one or two, depending on the case). Thanks to Dan Newman for prompting this review and change.

Did more DTD clean-up to remove redundant 'optional' specifiers on elements and attributes; made the 'internal identifier' descriptions consistent throughout the DTD and reference manual; tweaked the style of the reference pages in the reference manual; fixed poor grammar in the DTD; replaced parentheses with brackets in the BNF syntax in the reference manual for comments to avoid confusion; reformatted the reference pages in the manual for readability; and added references to W3C on-line documentation where necessary. Thanks to Dennis Linse for encouraging the correction of these long-standing inconsistencies and distractions.

Put editorial comments in BNF syntaxes in braces ({}) to avoid confusion with parentheses, which are used to indicate a choice. Thanks to Dennis Linse for the catch.

In the DTD, a sentence was added to the description of the deprecated fileCreationDate element and a similar description was added to the deprecated functionCreationDate element mentioning that both of them have been deprecated in version 2.0. The clarification was made after near-simultaneous suggestions from both Trey Arthur and Dan Newman.

Added a paragraph about the alias attribute of the variableDef element; it's a valid attribute but was missing an explanation. Thanks to Trey Arthur for catching this long-standing omission.

Changed the definition of atan2 so that the input arguments are not limited to ±1 and are not referred to as 'sine' and 'cosine' to better match ANSI C. Thanks to Dan Newman for catching this inconsistency.

Corrected typographical errors in fileHeader, variableDef, griddedTableDef, ungriddedTableDef, and function element schematic overview syntaxes in sections 6.2.1-6.2.6. Thanks to Dennis Linse for catching these errors.

Added a sentence about the tol sub-element being an absolute difference to remove ambiguity over its interpretation.

In the reference manual syntax layout, moved the provenance and provenanceRef sub-elements out of checkData and into staticShot sub-elements since checkData, a singleton place-holder, doesn't warrant a description but each staticShot does. provenance and provenanceRef are still in the DTD for checkData but only for backwards compatibility; their use in a checkData element is deprecated and may be removed in a future version. Thanks to Dennis Linse for prompting this needed change.

Added a note to documentRef docID attribute that it is deprecated. Thanks to Dennis Linse for catching this omission.

Removed the redundant "optional" in the description of reference element's xlink:href attribute. Added the constant value for attributes xmlns:xlink and xlink:type. Expanded the somewhat terse description of this element. Thanks to Dennis Linse for this correction and other helpful suggestions.