return {
    name        = "common-math",
    version     = "1.00",
    comment     = "Goodies that complement pagella.",
    author      = "Hans Hagen & Mikael Sundqvist",
    copyright   = "ConTeXt development team",
    mathematics = {
        tweaks = {
            presets = {
                matheulercalligraphic = function(parameters)
                    return {
                        tweak   = "replacealphabets",
                        feature = "matheulercalligraphic",
                        list    = {
                            {
                                source   = "uppercasescript",
                                target   = "uppercasecalligraphic",
                                filename = "euler.otf",
                                rscale   = parameters.rscale,
                            },
                            {
                                source   = "uppercaseboldscript",
                                target   = "uppercaseboldcalligraphic",
                                filename = "euler.otf",
                                rscale   = parameters.rscale,
                            },
                        },
                    }
                end,
                mathrsfscript = function(parameters)
                    return {
                        tweak   = "replacealphabets",
                        feature = "mathrsfscript",
                        list    = {
                            {
                                source   = "uppercasescript",
                                target   = "uppercasescript",
                                filename = "ralphsmithsformalscript-companion.otf",
                                rscale   = parameters.rscale,
                                feature  = "ss01",
                            },
                            {
                                source   = "uppercaseboldscript",
                                target   = "uppercaseboldscript",
                                filename = "ralphsmithsformalscript-companion.otf",
                                rscale   = parameters.rscale,
                                feature  = "ss01",
                            },
                        },
                    }
                end,
                mathxitsarabic = function(parameters)
                    return {
                        tweak   = "replacealphabets",
                        feature = "mathxitsarabic",
                        list    = {
                            {
                                source   = "arabicmathematicalalphabeticsymbols",
                                target   = "arabicmathematicalalphabeticsymbols",
                                filename = "xitsmath-companion.otf",
                                rscale   = parameters.rscale,
                            },
                            {
                                source   = "digitsarabicindic",
                                target   = "digitsarabicindic",
                                filename = "xitsmath-companion.otf",
                                rscale   = parameters.rscale,
                            },
                            {
                                source   = "digitsextendedarabicindic",
                                target   = "digitsextendedarabicindic",
                                filename = "xitsmath-companion.otf",
                                rscale   = parameters.rscale,
                            },
                        },
                    }
                end,
                moveitalics = function(parameters)
                    return {
                        tweak   = "moveitalics",
                        correct = parameters.correct,
                        list    = {
                            "lowercasenormal",
                            "lowercaseitalic",
                            "lowercasebold",
                            "lowercasebolditalic",
                            "lowercasegreeknormal",
                            "lowercasegreekitalic",
                            "lowercasegreekbold",
                            "lowercasegreekbolditalic",
                            "uppercasenormal",
                            "uppercaseitalic",
                            "uppercasebold",
                            "uppercasebolditalic",
                            "uppercasegreeknormal",
                            "uppercasegreekitalic",
                            "uppercasegreekbold",
                            "uppercasegreekbolditalic",
                            mathematics.tweaks.subsets.dotless,
                        }
                    }
                end,
            },
        },
    },
}