When you open an asset, SVN Tools will automatically lock it for you to make sure another user cannot edit the asset at the same time. When locked it will show in your project view with a lock icon in front of the asset icon.
If you try to open a file which is locked by another user, a warning dialog will show with the message that the file is locked. In this dialog, you can choose to break the lock and open the file if you have to. Additionally, files can also be locked after they are modified instead of when opening them.
Automatic Adding and Removing
SVN Tools will help you to keep your project clean by automatically adding/removing files. Newly imported files will be marked as Added while deleted files will be marked as Deleted. When a file has been renamed or moved SVN Tools will automatically remove the old file and mark the new file as Added.
Occasionally your working copy will be locked internally by Subversion. This happens when a command failed, multiple commands were run at the same time or for a number of other reasons.
When this happens Subversion will output a message with the notice that your Working Copy is locked and you need to run a ‘Cleanup’ command. Svn Tools will automatically run a Cleanup command for you and retry any commands that failed because of the locked Working Copy.
Out of Date Assets
When trying to open an asset that is Out of Date, Svn Tools will show a warning dialog with a message saying the file is Out of Date and needs to be updated. Here you can choose to update the file, cancel opening the file or open it anyway if you have to.
There is no need to pay attention to your Meta files. Svn Tools will automatically include all Meta files in any command and make sure they stay updated with their corresponding asset.
Note: Please make sure you are using 'Visible Meta Files'
(Edit > Project Settings > Version Control)