This rule is called by

-> ada_host_id -> cobol_host_id -> c_host_id

This rule is called by

-> direct_implt_def_stmt

This rule is called by

-> direct_implt_def_stmt -> embdd_sql_ada_program -> embdd_sql_cobol_program -> embdd_sql_c_program -> embdd_sql_fortran_program -> embdd_sql_mumps_program -> embdd_sql_pascal_program -> embdd_sql_pl1_program -> fortran_host_id -> host_label_id -> host_pl1_label_variable -> id_start -> mumps_host_id -> newline -> nondoublequote_char -> nonquote_char -> pascal_host_id -> pl1_host_id -> prep_implt_def_stmt -> space