Notes about the KM3 file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The KM3 file type is primarily associated with 'Kernel MetaMetaModel'.
KM3, the Kernel Meta Meta Model, provides a textual concrete syntax that eases the coding of metamodels.
Its syntax is simple, straight forward and has some similarities with the Java notation. A .KM3 file can be transformed into a metamodel and serialized in XMI. Present tools support Eclipse EMF Ecore and MOF 1.4 (using Netbeans MDR). KM3 abstract syntax (metamodel) is based on Ecore and eMOF 2.0.
Detailed information for file extension KM3:
Primary association: Kernel MetaMetaModel
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.