def exclude():
    """Returns a list of patterns to exclude from a search. Add
    terms as required."""
    exclude = ['*/alignment*', '*/trash*', '*/_Archived*', '*/backup*',
        '*/Commissioning*', '*/Test*', '*/.AppleDouble*', '*LaserX*',
        '*LaserZ*', '*Copy*', '*._*', '.DS_Store']
    return exclude
