General ⇒ Package To Store \gdef Definitions In An External File

[kurttodoroff]

I want LaTeX to write the document \gdef{} commands and corresponding replacement text (or, its equivalent package command data) to an external file, similar to how it writes \label{} data to the auxiliary file.

This would allow me to use the \gdef{} definition in a document location that occurs before the definition occurs, similar to \label{} and \ref{}.

I prefer to avoid using \newcommand for the lengthy technical definitions in this document, insofar as it is simpler and more convenient to place the \gdef{} at the location of primary usage, than to place the \newcommands in the preamble.

For example, I would define the inertial navigation system outputs, in the INS section. Other sections, preceding and superseding this section, would use this language. Definition management is simplified by locating the \gdef{} in each corresponding section.

Is such a package available?

Thank you.

Kurt