sentences:  This freed some 150 bytes of conventional memory and enabled full compatibility with DOS-UP, but at the same time broke compatibility with older versions of Windows 3.xx when using the HIFILES feature, and vice versa.The patch named IBMBIO85.SCR continued to work with newer versions of DR-DOS.In August 1998 the US-based Caldera, Inc. created two new subsidiaries, Caldera Systems, Inc. for the Linux business, and Caldera Thin Clients, Inc. for the embedded and thin-client market.