These are the versioned properties that Subversion reserves for its own use:
If present on a file, the client will make the file executable in Unix-hosted working copies. See File Executability.
If present on a file, the value indicates the file’s MIME type. This allows the client to decide whether line-based contextual merging is safe to perform during updates and can also affect how the file behaves when fetched via a web browser. See File Content Type.
If present on a directory, the value is a list of unversioned file patterns to be ignored by svn status and other subcommands. See Ignoring Unversioned Items.
If present on a file, the value tells the client how to expand particular keywords within the file. See Keyword Substitution.
If present on a file, the value tells the client how to manipulate the file’s line-endings in the working copy and in exported trees. See End-of-Line Character Sequences and “svn export” earlier in this chapter.
If present on a directory, the value is a multiline list of other paths and URLs the client should check out. See Externals Definitions.
If present on a file, indicates that the file is not an ordinary file but a symbolic link or other special object.
If present on a file, tells the client to make the file read-only in the working copy, as a reminder that the file should be locked before editing begins. See