download link: https://www.genenames.org/download/statistics-and-files/ table: "Complete dataset download links" -->> "Complete HGNC approved dataset" -->> download the "TXT" table filename is typically something like hgnc_complete_set.txt URL; https://ftp.ebi.ac.uk/pub/databases/genenames/hgnc/tsv/hgnc_complete_set.txt
hgnc_idmap_table(filename)
a long-format table with columns; hgnc_id, hgnc_symbol, type, value
full path to the downloaded table (expected to be tsv format, typically has .txt or .tsv file extension)
table: "Total Approved Symbols" -->> "TXT" / "text file in TSV format" filename is typically something like non_alt_loci_set.txt