When you load a file version into a Web view, the IBM Rational® ClearTeam Explorer™ applies the local file system's read-only attribute to the file. When you check out the file, the read-only attribute is removed so that you can make modifications. When you check in the file, the read-only attribute is reapplied.
If you need to modify a loaded file without checking it out (for example, if you cannot connect to the CCRC WAN server), you can use the hijack operation to make the file modifiable even though it cannot be checked out.