To install APLX: 1. Extract the downloaded APLXLinux5.0.tgz file: tar zxvf APLXLinux5.0.tar This creates a directory APLXLinux5.0 containing all the installation files. 2. Change to the new directory: cd APLXLinux5.0 3. Read through the installation notes in install.txt then run the installer: ./setup.sh   To start APLX for the first time: 1. Start APLX. You will be prompted to enter your Serial code. 2. Enter a Serial code of LCPHUNGC. You will be prompted to restart APLX.   To install the font: Most non-Debian-based Linux distributions include fonts that can display the APL character set. 1. Place the downloaded aplx_unicode.ttf file in the /usr/share/fonts/ directory. 2. As root, open a command prompt and run fc-cache /usr/share/fonts.