.htm file extension

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.htm: Hyper Text Markup (HTML) file. Text file. Used for web pages. By convention HTML pages composed on Windows platforms have the .htm file extension, whilst pages composed on other platforms use .html, but both file extensions are otherwise equivalent.

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Can you add to this? Do you know of any applications not already listed which will work with .htm files, view, or open .htm files? Are you able to contribute any additional reference or file format information about .htm files, or have you spotted any errors or omissions? If so then please let us know by emailing us at feedback@cryer.co.uk. Thank you.