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in HTML, the functionality to 'Show/Hide Amendments' would become very complex, as it should distinguish between current and previous amendments.

Before a new issue is created, a process called "fixing the amendment" has to be executed. This definitively applies the changes of an amendment into an eAIP by removing all elements marked as "deleted" (including their content) and by converting all elements marked as "in-serted" so that they are seen as not amended.
It should be noted that this approach does not have a direct impact on the paper format. It is still possible to keep the old changes, by printing the PDF and inserting into the paper version only the updated pages. Naturally, the old pages are not affected.
6.3.2. AIRAC cycle aspects
The eAIP Specification allows for publishing changes in advance by 2 or more AIRAC cycles. However, the fact that a full eAIP is issued, requires special consideration. When an amended eAIP is issued with an effective date earlier than that of a previously issued eAIP which is not yet in force, the previous issue needs to be updated.
The full eAIP Amendment process is described in the eAIP Editors Manual. This includes the procedure for advanced changes publication, by two or more AIRAC cycles.
Users will benefit from receiving a full eAIP, in which all changes are clearly marked. They are no longer required to do the page replacement, which, estimated at the scale of the whole aviation community, every AIRAC cycle, is a costly effort. However, the benefit of not having to do yourself the updates comes at a price in terms of complexity/flexibility for the eAIP editor.
6.3.3. Automation
Amendment production can be partially automated. For example, provided a content manage-ment and versioning software is available, the amendment creation, validation and publication procedure can be completely embedded in the tool.
Similarly, if automation is available within the XML editor software, then the actual creation and manipulation of changes can be made a lot simpler. It is highly recommended that espe-cially the XML to PDF production process is automated, as the manual process is quite fasti-dious.
Another approach is a fully automated text amendment editing. In this approach, editors simply amend their eAIP without worrying at all about amendment mark-up. They just replace text where needed, add and remove paragraphs where necessary. When the edition process is finished, a software program compares the new (modified) eAIP with the previous issue and inserts amendment mark-up as appropriate. After that, the editors can check the result on screen and on paper.
Chapter 7. Multi-lingual eAIP
7.1. Introduction
The eAIP Specification supports multilingual AIP and the expectations of the user for each presentation media have been also considered. In a browser, the user expect to see the eAIP in one language, while being able to switch to another language at any moment. On paper, users expect that multilingual AIP present the two languages in the classical style, either recto-verso or on two columns.
7.1.1. XML version
For technical reasons, one eAIP document in XML contains all the AIP content for a single language. That language is indicated by the attribute xml:lang on the e:eAIP element. When the AIP needs to be published in more than one language, the publishing organisation will have to create a separate set of eAIP XML files for each language.
There are some good reasons behind this decision:
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the complexity of the DTD is considerably reduced, as a single language attribute is ne-cessary;

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separating the languages allows to keep eAIP files at a reasonable size.

7.1.2. HTML version
Using the XSLT style sheets provided by EUROCONTROL, only one language is produced per HTML page. This is very much in line with the way almost all Web sites are organised. The user is offered the possibility to select his preferred language early on a Web site, and stick with it most of the time. The eAIP menu, which sits in the upper right corner of every eAIP page in HTML, will contain a link to the other language version.
　
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