**'''''LBOdata_sheet3.txt:''''' Third sheet of LBO_list_and_data.xlsx as tab-delimited txt
**'''''LBOdata_sheet4.txt:''''' Fourth sheet of LBO_list_and_data.xlsx as tab-delimited txt
*'''''stdcompnames.txt:''''' Standardized COMPUSTAT company names (and non-standardized name lookup, gvkeysgvkey). Used for matching to LBO and patent data.