gistfile1.js

t.simulateDrag(el, 10, 10).then(function (cont) {

    
    store.doXHRRequest({
        callback        : function () {
            cont.CONTINUE('result')
            // or just
            cont('result')
        },
        
        errback : function (err) {
            cont.THROW(err)
        }
    })
    

}).then(function (cont, result) {

    result == 'result' // received from previous segment

    // in general, do you stuff asynchronously, 
    // then call the cont.CONTINUE(result) or cont(result) when done
    // or cont.THROW(error) in case of any error

    cont.CONTINUE()

}).then(...)


// optional - CATCH/FINALLY sections:
.except(function (cont) {

}).ensure(function (cont) {

})