How do I install support for Subversion (SVN) in Eclipse or isCOBOL IDE?

Veryant recommends the Subclipse plugin from https://marketplace.eclipse.org/content/subclipse/

Here are the instructions to install Subclipse in the current isCOBOL IDE:

Select Install New Software... from the Help menu
Press the Add... button and enter the following information (your location might be different depending on the version you install):
Name: Subclipse Update Site
Location: https://subclipse.github.io/updates/subclipse/4.3.x/
Press OK
Check the top 3 boxes (Core SVNKit Library, Optional JNA Library, Subclipse)
Press Next > and Next>
Accept the license agreement
Press Finish
Press OK in the message box concerning unsigned content
Press Yes to restart Eclipse

To explore an existing SVN Repository:

Select Window > Open Perspective > Other... and SVN Repository Exploring
Right click in the SVN Repositories view and select New > Repository Location
Enter the URL for your repository. For example, if you created a repository with "svnadmin create c:svnmyproj" then you can enter the URL file:///c:/svn/myproj
To share an isCOBOL project with others (i.e. check it into SVN), you right-click on the project in the navigator view and select Team > Share Project...
Select SVN and press Next >
Select the existing repository location (i.e. the one you added using the SVN Repository Exploring). Press Next > and take the defaults.
Now when you right-click on the project in the navigator view and select Team you will see all of the SVN operations.

If your repository is on a remote system (e.g. a Linux VM) then the URL will be svn://hostname/repository where hostname is the name or IP address of your remote host and repository is the name of your repository.