public class AttachmentCollection : ICollection, 
	IEnumerable, IEnumerable<Attachment>

    Project.UndoContext.BeginUndoStep("Attachments Properties");
    try
    {
        // Instance active station.
        #region AttachmentsPropertiesStep1
        Station stn = Station.ActiveStation;
        #endregion

        // Enumerates the attachments in the station and outputs their info using the logger.
        Logger.AddMessage(new LogMessage("The station contains the following attachments:"));
        #region AttachmentsPropertiesStep2
        foreach (Attachment att in stn.Attachments)
        #endregion
        {
            // Get the attachments transform values.
            #region AttachmentsPropertiesStep3
            string transStr = "";

            transStr += "X: " + att.Offset.t.x;
            transStr += " Y: " + att.Offset.t.y;
            transStr += " Z: " + att.Offset.t.z;
            transStr += " RX: " + att.Offset.EulerZYX.x;
            transStr += " RY: " + att.Offset.EulerZYX.y;
            transStr += " RZ: " + att.Offset.EulerZYX.z;

            // Output the AttachmentParent, the AttachmentChild and the transform.  
            #region AttachmentsPropertiesStep4
            Logger.AddMessage(new LogMessage("Child: " + att.AttachmentChild.Name +
                " is attached to Parent: " + att.AttachmentParent.Name +
                " and has transform: '" + transStr + "'"));
            #endregion
        }
    }
    catch
    {
        Project.UndoContext.CancelUndoStep(CancelUndoStepType.Rollback);
        throw;
    }
    finally
    {
        Project.UndoContext.EndUndoStep();
    }
    #endregion
}