.update_refs            Updates reference tables
DBtestPostgreSQL        Database - Test a PostgreSQL database.
DBtestSQLite            Database - Checks access to a SQLite database.
GDT_NAMES               Reference tables - gdal data types.
datExportData           Spatial - Exports a data frame object.
datSum_options          Options for summarizing tree data.
database_options        Database options.
eval_options            List of population tables.
kindcd3old              Reference table - List of RMRS plots that have
                        fallen out of inventory because they were not
                        found or they were in the wrong place.
multest_options         Multest output options.
popFilters              Population data filters.
popTableIDs             List of population table unique IDs.
popTables               List of population tables.
ref_codes               Reference tables - Code definitions.
ref_codes_archive       Reference tables - Code definitions (Archive).
ref_cond                Reference table - Metadata for cond default
                        variables output from DBgetPlots()
ref_conversion          Reference table - for conversion factors.
ref_diacl2in            Reference table - diameter 2-inch class codes
                        (DIA).
ref_domain              Reference table - for generating tables.
ref_estimators          Reference table - FIESTA estimators.
ref_estvar              Reference table - for generating estimates
ref_evaltyp             Reference table - for generating tables.
ref_plt                 Reference table - Metadata for plt default
                        variables output from DBgetPlots()
ref_popType             Reference table - popType codes.
ref_shp                 Reference table - Metadata for shp_* default
                        variables output from DBgetPlots()
ref_species             Reference table - Code definitions.
ref_statecd             Reference table - state codes (STATECD).
ref_titles              Reference table - Variable titles.
ref_tree                Reference table - Metadata for tree default
                        variables output from DBgetPlots()
ref_units               Reference table - for variable units.
savedata_options        Data saving options.
spMakeSpatial_options   Make SpatialPoints options
strata_options          Strata options.
stunitco                SpatialPolygonsDataFrame with FIA state, unit,
                        county codes and names
tableIDs                List of FIADB table unique IDs.
table_options           Table aesthetics and output options.
title_options           Title output options.
unit_options            Unit options.
xy_options              List of population tables.
