Users of IndexCat™ can search by language in the eTKeVK2 collection only by using the Advanced Search page. There are two language values that are used in the eVK2 records - Middle English or Old English. The eTK collection has no language values.
At this time it is not possible to search by language in the Index-Catalogue collection. However languages are displayed in the search results under the Index-Catalogue and eTKeVK2 tabs.