Green tick: A newly checked-out working copy uses the following green check overload. Indicates the Subversion state
is normal black asterisk: After you start editing a file, the state becomes a modified, and the icon overload becomes a black asterisk. In this way, you can easily see which files have been modified since you last updated your work copy. Need to be submitted.
Yellow exclamation point: If there is a conflict during the commit process, the icon becomes a yellow exclamation point.
Gray Check: If you set the Svn:needs-lock attribute to a file, subversion will make the file read-only until you get the file lock, and the read-only file has this overloaded icon to indicate that you have to get a lock before editing.
Yellow Small Lock: If you have a lock on a file and the Subversion state is normal, this overloaded icon pedagogy reminds you that you should release the lock if you do not use the file and allow others to submit changes to the file.
Red Fork: This icon indicates that some files or folders under the current folder have been scheduled to be removed from version control, or that a controlled file is missing from the folder.
Blue Plus: The plus sign tells you that a file or directory has been scheduled to be added to version control.
Above, may be different versions, icons vary, but the overall is the same, the problem of friends can learn from