Annotation of video data in the Corpus NGT

All of the video files in the Corpus NGT have been provided with ELAN annotation files in the first release of the corpus in December 2008. Only a small number of these files (160 out of 2375) actually contain annotations. The other ELAN files are empty, yet do contain the same tiers and linguistic type definitions as the annotated documents. Thus, they will facilitate use of the corpus in a later phase when annotations are added. The conventions used in creating the files as well as the glossing conventions are documented here. In addition, we describe some Perl scripts that have been created to complement the functionality in version 3.6 of ELAN.