As our main purpose of developing the tool was to examine any grammatical traits of biological sequences, the graphical user interface was important for a semiautomatic screening process. However, we still need to implement various features to compare gene structures to summarize statistics in regards to grammatical structures and to combine evolutionary trees. Hopefully, these features will be implemented in the next version of JSequitur. We also hope to enhance the algorithm more elaborately to handle reversal, translocation, and shuffling.