Itcl - the [incr Tcl] extension

Help: allow-symlinks
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The "allow-symlinks" setting:

When allow-symlinks is OFF, symbolic links in the repository are followed
and treated no differently from real files.  When allow-symlinks is ON,
the object to which the symbolic link points is ignored, and the content
of the symbolic link that is stored in the repository is the name of the
object to which the symbolic link points.