def scalePages(pdf, r, sx, sy):
    """Scale the page dimensions and content of the given range of pages by
    the given scale (sx, sy), about (0, 0). Other boxes (crop etc. are altered
    as appropriate)."""

def scaleToFit(pdf, r, w, h, scale_to_fit_scale):
    """Scales the pages in the range to fit new page dimensions (w and h)
    multiplied by scale_to_fit_scale (typically 1.0).  Other boxes (crop etc.)
    are altered as appropriate."""

def scaleToFitPaper(pdf, r, papersize, scale_to_fit_scale):
    """Scales the given pages to fit the given page size, possibly multiplied
    by scale_to_fit_scale (typically 1.0)."""

def scaleContents(pdf, r, pos, scale):
    """Scales the contents of the pages in the range about the point given by
    the position, by the scale given."""

def shiftContents(pdf, r, dx, dy):
    """Shift the content of the pages in the range by (dx, dy)."""
    r = range_of_list(r)

def shiftBoxes(pdf, r, dx, dy):
    """Shift the pages boxes in the range by (dx, dy)."""

def rotate(pdf, r, rotation):
    """Change the viewing rotation of the pages in the range to an absolute
    value. Appropriate rotations are 0, 90, 180, 270."""

def rotateBy(pdf, r, rotation):
    """Change the viewing rotation of the pages in the range by a given number
    of degrees. Appropriate values are 90, 180, 270."""

def rotateContents(pdf, r, rotation):
    """Rotate the content about the centre of the page by the given number of
    degrees, in a clockwise direction."""

def upright(pdf, r):
    """Change the viewing rotation of the pages in the range, counter-rotating
    the dimensions and content such that there is no visual change."""

def hFlip(pdf, r):
    """Flip horizontally the pages in the range."""

def vFlip(pdf, r):
    """Flip vertically the pages in the range."""

def crop(pdf, r, x, y, w, h):
    """Crop a page to the box defined by (x, y, w, h), replacing any existing
    crop box."""

def removeCrop(pdf, r):
    """Remove any crop box from pages in the range."""

def removeTrim(pdf, r):
    """Remove any trim box from pages in the range."""

def removeArt(pdf, r):
    """Remove any art box from pages in the range."""

def removeBleed(pdf, r):
    """Remove any bleed box from pages in the range."""

def trimMarks(pdf, r):
    """Add trim marks to the given pages, if the trimbox exists."""

def showBoxes(pdf, r):
    """Show the boxes on the given pages, for debug."""

def hardBox(pdf, r, boxname):
    """Make a given box a 'hard box' i.e clip it explicitly. Boxname could be,
    for example "/TrimBox"."""