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LCD menu for dual x carriage - 9 years ago

I am building a dual x carriage 3D printer and using the Marlin firmware 1.0.x to setup. But the lcd menu tree can only control X Y Z and one extruder E I want to add X2 and E2 in the Menu Prepare -> Move Axis, so I can manually move the second carriage and extruder So far I have looked into the Ultralcd.cpp file and add the following line: static void lcd_move_x2() { _lcd_move(PSTR