From the Database Administration manual:
"A dictionary table archive contains all table, view, macro and trigger definitions in the
database, and dictionary entries for stored procedures and user-defined functions. A restore of
a dictionary archive restores the definitions of all data tables, views, macros, triggers, and
stored procedures. However, it does not restore any data."
To accomplish a dictionary table archive review the ARCHIVE command in the Archive/Recover Utility manual.
The following command should be pretty close to what you are looking for:
ARCHIVE DICTIONARY TABLES
ALL;