.HDM File Extension
What is an HDM file?
Web page written in the Handheld Device Markup Language (HDML); designed for portable electronic devices, such as smartphones and PDAs; HDML files are transferred to devices using HDTP (the Handheld Device Transport Protocol) rather than HTTP, which is used for .HTML pages.
More Information
HDML files commonly use the .HDML file extension.
Programs that open HDM files
Windows
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Mac
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