Oh OK I see, sorry I don't use those functions in Dreamweaver. I looked in the help file, does this help explain a bit better?

Getting and putting files

If you’re working in a collaborative environment, use the Check In/Check Out system to transfer files between local and remote sites (see Using Check In/Check Out). If you’re the only person working on the remote site, however, you can use the Get and Put commands to transfer files without checking them in or out.

Note: If you select Site > Get or Site > Put while the Document window is active, and if the current file is not part of the currently open site, Dreamweaver attempts to determine which of your locally defined sites the current file belongs to; if the current file belongs to only one local site, Dreamweaver opens that site, and then performs the Get or Put operation.

Using Check In/Check Out

If you’re working in a collaborative environment, you can check files in and out from local and remote servers. If you’re the only person working on the remote server, you can use the Put and Get commands without checking files in or out (see Getting and putting files).

Checking out a file is the equivalent of declaring “I’m working on this file now—don’t touch it!” When a file is checked out, Dreamweaver displays the name of the person who checked out the file in the Site panel, along with a red check mark (if a team member checked out the file) or green check mark (if you checked out the file) next to the file’s icon.

Checking in a file makes the file available to other team members to check out and edit. When you check in a file after editing it, your local version becomes read-only and a lock symbol appears beside the file in the Site panel to prevent you from making changes to the file.

Dreamweaver does not make checked-out files read-only on the remote server. If you transfer files with an application other than Dreamweaver, you can overwrite checked-out files. However, in applications other than Dreamweaver, the .LCK file is visible next to the checked-out file in the file hierarchy to help prevent such accidents.

To enable or disable Check In/Check Out for some sites, see Setting up the Check In/Check Out system. For information about transferring files between local and remote sites without checking them in or out, see Getting files from a remote or testing server and Putting files on a remote or testing server.

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