What does the "R" marker indicate in file attributes?

The "R" marker in file attributes signifies that a file is "Read-only." This means that the file can be viewed and opened, but cannot be modified or deleted by users who may have less security privileges on the system. This attribute is important for protecting sensitive data, as it prevents accidental changes that could lead to loss of information or corruption of the file.

In various operating systems, toggling the read-only attribute can be done through file properties or command-line instructions, allowing users and system administrators to control access to files effectively. The read-only status is significant in collaborative environments where file integrity is critical.

The other options refer to different concepts that do not accurately define what the "R" marker represents in file attributes. Regular signifies a standard file type without specific characteristics. Revised could suggest an updated document but does not relate to file attributes in general. Remote commonly pertains to files located on a different server or system and is not indicated by an "R" marker.