CoNLL expands into "Computational Natural Language Learning", which is the name of a conference chain where the format(s) originated. Unqalified "CoNLL" should be considered a meta-format (plain text, column-based) that should not be referenced by SIS recommendations.

Formats that can be used across CLARIN:

• CoNLL-X, may be considered as superseded by CoNNL-U
• CoNLL-U, the base format of Universal Dependencies
• CoNLL-U Plus, the template for extensions to CoNLL-U