The Quartus II shortcut key combination Ctrl H not available for the Replace command for Red Hat Enterprise version 4 or version 5 operating systems - The Quartus II shortcut key combination Ctrl H not available for the Replace command for Red Hat Enterprise version 4 or version 5 operating systems Description On computers that use the Red Hat Enterprise version 4 or Red Hat Enterprise version 5 operating systems, the shortcut key Ctrl H is not available for the Replace command on the Edit menu of the main Quartus II software window. Resolution To use the Replace command, click Replace on the Edit menu. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']