This part of CrossVision can be used to create complex web services with ease. We used it for the creation of those serves that involved complex tasks like logging in, buying products and submitting new products. Those services are used by the web application, but could also be used by external applications.

For the purposes of those web services, we developed complex sequences of instructions. Some services use more than one sequence. Different sequences are responsible for authorisation, product confirmation, database retieval and updating, email sending, error handling and so on.

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