[lemma=","] [word=easy] [□=□] □
[lemma=","] [word=easy] [tag=□] □
[lemma=","] [word=easy] [lemma=□] □
The RETSINA Agent Editor provides a GUI interface to an agent 's task and reduction libraries and allows for quick development of new libraries , easy extensions of existing libraries , and re-use of existing libraries for new agents .