Sooner or later archives storing electronic data will most likely face the task how to archive resources from the internet. These will usually come in as an URI (Uniform Resource Identifier, pointing at a webpage or some other resource in the internet.References to external documents are not something fundamentally new to archives. Traditionally these references point at a document kept safely in another archive like a National Library. In contrast, information in the internet underlies a continual process of change, pages will be updated, merged or they disappear suddenly, whole domains will raise and fall without leaving a useful trace for reference.The obvious way of treating these resources is to download the concerning page. Despite the copyright issues, what if there are other links on the page? Instead of downloading whole sites or starting to archive the internet, it is advisable to treat these dynamic resources as an information type at its own. At first, it is necessary to examine the structure of this kind of resource.