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6. Evaluation of LIME’s user experience
three percent respectively), the fact that they belong to the upper-left sector
of the scatterplot means that they must be promoted and, maybe, improved.
Very difficult tasks to analyze are the ones belonging to the lower-left
sector of the diagram. In this sector there are the tasks where users had to
markup an article, its number and its heading and the one where users were
asked to save documents as new expressions. Users thought that these tasks
would be difficult and, indeed, they were so. This data means that there are
no big surprises here, although combining this data with the one received in
the efficiency evaluation of the same tasks, it is clear that there are many
opportunities of improvement.
The last sector is the upper-right one. To this sector belong tasks that
users thought would be easy and, indeed, they were. This means that these
features of LIME must not be changed and that it is already usable for the
completion of those tasks.
Having eleven points in the upper-right sector of the diagram and three
points in the upper-left sector, I can conclude that, except for five tasks,
users are overall satisfied when they use LIME.
6.5
LIME’s strengths and weaknesses
In this chapter I analyzed the LIME usability. Firstly, I described the
usability test that I created to evaluate markup editors and then I described
the results that I obtained applying it to LIME.
Results demonstrated that LIME is effective and efficient and that users
are quite satisfied when they use it. LIME seems to be very usable for
markup. Users take advantage of its functionality to quickly mark up the
structure of legal documents. Except for some tasks, they feel comfortable
with the markup toolbar supplied by the editor. Moreover, they can use
easily the interface when they have to navigate through documents and their
various views.
However, other tasks, like the save system, frustrated users. This is due