Because LMG Arun is a legacy font, text typed in it may not display correctly on the web or in modern apps like WhatsApp unless the recipient also has the font installed. Typing Keyboard Lmg-Arun | PDF | Text - Scribd

Double-click the font file and click the button in the preview window. For Linux : Copy the font file to the directory /usr/share/fonts . Understanding the LMG Arun Keyboard Layout

Alternatively, copy the font file and paste it into C:\Windows\Fonts . :