A source code editor, hope this helps! :)
You use the extension on the end of the file to tell you the type of a file
The extension is the .whatever in the name of the file
Answer:
SharePoint Server
Explanation:
One drive you are not being provided with the opportunities like the versioning, check-outs and content approval. However, through SharePoint Server, you are being leveraged with all these features. Through versioning, you can update the document anytime, and also keep track of previous versions as well as the changes that you are making. Through content approval, you can ensure various members have approved permission privilege with them regarding the publication of the content.
Through checkout and check-ins the users can have control ob the new versions of the document as well as while the check-in the document, they can comment on the changes they have made.