The file extension that is automatically added to documents in word 2019 is .docx.
File extension is the ending of a file that helps identify the type of file in operating systems, such as pdf files. For example the files extension of PDF is .pdf.
In a simpler terms, a file extension, or filename extension, is a suffix at the end of a computer file.
The file extension indicates the kind of file that is saved.
Therefore, the file extension that is automatically added to documents in word 2019 is .docx.
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