if not modules then modules = { } end modules ['lpdf-vfc'] = {
    version   = 1.001,
    comment   = "companion to lpdf-ini.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

local setmetatableindex = table.setmetatableindex

local defaultline = 16384

local vfspecials = backends.pdf.tables.vfspecials or utilities.storage.allocate { }
backends.pdf.tables.vfspecials = vfspecials

vfspecials.backgrounds = setmetatableindex(function(t,h)
    local v = setmetatableindex(function(t,d)
        local v = setmetatableindex(function(t,w)
            local v = { "frame", w, h, d, defaultline, true, true }
            t[w] = v
            return v
        end)
        t[d] = v
        return v
    end)
    t[h] = v
    return v
end)

vfspecials.outlines = setmetatableindex(function(t,h)
    local v = setmetatableindex(function(t,d)
        local v = setmetatableindex(function(t,w)
            local v = { "frame", w, h, d, defaultline, false, true }
            t[w] = v
            return v
        end)
        t[d] = v
        return v
    end)
    t[h] = v
    return v
end)