DEFCMD ("RECODE", ERRO, INPU, TRAN, TRAN, cmd_recode)
DEFCMD ("RECORD TYPE", ERRO, INPU, ERRO, ERRO, cmd_record_type)
UNIMPL ("REFORMAT", ERRO, ERRO, ERRO, ERRO, "Read obsolete files")
-UNIMPL ("REGRESSION", ERRO, ERRO, ERRO, ERRO, "Compute regression coefficients")
+DEFCMD ("REGRESSION", ERRO, ERRO, PROC, PROC, cmd_regression)
DEFCMD ("RENAME VARIABLES", ERRO, INPU, TRAN, PROC, cmd_rename_variables)
UNIMPL ("REPEATING DATA", ERRO, INPU, ERRO, ERRO, "Specify multiple cases per input record")
UNIMPL ("REPORT", ERRO, ERRO, ERRO, ERRO, "Pretty print working file")