What is the difference between .m4r and .pcl?
- Extension
 - .m4r
 - .pcl
 
- Format
 - Binary
 - Text
 
- Category
 - Audio
 - Document
 
- Developer
 - Apple Inc.
 - Hewlett Packard
 
- Description
 - M4R is an iTunes ringtone file that stores mono channel audio. They are identical to the M4A format files only that they are correctly used for ringtones.
 - PCL stands for Printer Command Language which is a Page Description Language introduced by Hewlett Packard (HP).
 
- MIME Type
 - audio/x-m4r
 - application/vnd.hp-PCL
 
- Sample
 - sample.pcl
 
- Wikipedia
 - .m4r on Wikipedia
 - .pcl on Wikipedia