The settings in the "Advanced" group allow you to control whether &os2; uses high memory.

Note that all these settings require that you are running an Aurora kernel (that is, OS/2 kernel version 4.5 or higher: Warp Server for e-business, Warp 4 with at least fixpak 13 installed, or an IBM "Convenience Pack", or eComStation). Otherwise all these settings will be disabled.