add_unique              Add a value to a current list that every value
                        is unique
str_count               Count words in a text
trim                    Remove whitespace from both sides of a string
upload_dico             Upload file
xdata                   Transform the results to data frame
xentity                 List of entities or relations
xhist                   Graph 'xhist'
xparse                  Call script Perl for extracting data from
                        corpus
xplot                   Graph 'xplot'
xprop                   Graph 'xprop'
xshow                   Show results
xtest                   Test each pair relations
