How to open .MDOWN file extension?

If you cannot open a new file that has been saved in the .MDOWN format you need to download the appropriate software. The manufacturer of .MDOWN files is John Gruber; .MDOWN files belong to the Developer Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .MDOWN files. Activities performed in the order described should solve the problems with all the files in the .MDOWN format.

• What is .MDOWN file?
• How to open .MDOWN file?
• What is .MDOWN file?