How it works
The basic idea of EVT is very similar to the modus operandi which is commonly used to convert TEI XML documents in HTML: when the main style sheet is applied to the document, it starts a processing which ends with a website containing the digital edition of the manuscript. Our ideal goal, in fact, is to have a simple, very user-friendly drop-in tool, requiring little work and/or knowledge of anything beyond XML from the editor. To reach this goal, EVT is based on a modular structure where a single style sheet (evt_builder.xsl) starts a chain of XSLT 2.0 transformations calling in turn all the other modules; the latter belong to two general categories: those devoted to building the HTML site, and the XML processing ones, which extract the edition text lying between folios using the
<pb/> element and format it according to the edition level. All XSLT modules live inside the builder_pack folder, in order to have a clean and well organized directory hierarchy.
At the present moment EVT can be used to create image-based editions with two possible edition levels: diplomatic and diplomatic-interpretative. This means that a transcription encoded using elements of the TEI transcr module (see chapter 11 Representation of Primary Sources in the Guidelines) should already be compatible with EVT, or require only minor changes to be made compatible. A search functionality has been added for all edition levels, and EVT also supports named entities and the handling of the corresponding lists. The Vercelli Book transcription is following the standard TEI schemas with no custom elements or attributes added: our tests with similarly encoded texts showed a high grade of compatibility. A critical edition level is being studied and it will be added in the future. On the image side, several features such as a magnifying lens, a general zoom, image-text linking and more are already available. The image-text feature is inspired by Martin Holmes’ Image Markup Tool software and was implemented in XSLT and CSS by one of the students collaborating to the project; all other features are achieved by using jQuery plugins.
A short guide to EVT
EVT doesn't need an installation process: just uncompress the archive in a suitable folder and you are ready to go.
###Configuration There are several ways to customize EVT, the most important one is to modify the builder_pack/modules/evt_builder-conf.xsl file to configure the existing parameters so that the UI layout matches your edition data. Refer to the EVT manual (doc folder) for more information about this file and other ways of customizing EVT output.
You can also use the online configurator.
The EVT Manual is available in the
doc folder of the zipped archive, and as a separate download on the project [home page] (http://evt.labcd.unipi.it/) and/or on the [Sourceforge repository] (https://sourceforge.net/projects/evt-project/).