add_metadata            Add metadata to imported data
extract_metadata        Extract metadata for imported data
glc_collect             Collect compatible file groups
glc_datasets            Inventory datasets
glc_download            Download package metadata or data
glc_explore             Explore Global Light Commons data packages
glc_files               Inventory declared data files
glc_metadata            Load metadata resources
glc_open                Open a Global Light Commons data package
glc_packages            List registered Global Light Commons data
                        packages
glc_read                Read metadata-described dataset files
glc_resources           Inventory data-package resources
glc_schema_versions     Report supported GLC schema versions
glc_search_metadata     Search metadata values or field paths
glc_search_packages     Search registered data packages
glc_summary             Summarize a Global Light Commons data package
glc_variables           Inventory and search declared variables
