A trick to sort publication types at will

This article of mine has just been posted on the knowledge-base 
sectional page of xaraya.com. I reproduce it here for visibility.

The sort order for publication types can be set only by ID, Name, or 
Description. Sometimes you may want to set the sorting order 
differently. Use this simple trick to achieve the sorting order you want 
without modifying the appearance of the pubype name or description.

The simple trick that I have used is to add spaces at the beginning of 
the description of the pubtype. When you choose to sort pubytpes by 
description, xaraya correctly puts descriptions starting with spaces on 
top of the sorting order. However, in the HTML of your browser will 
ignore such spaces, hence the appearance of your pubtype description 
will not change.
Here are more detailed instructions hopefully "beginner-proof":

    1. Go to admin/articles/modify config and choose "sorting order for 
publication types..." equal to "description". Don't forget to submit 
such change by clicking on "update configuration at the bottom of the page"
    2. Go to admin/articles/publication types.
          1. Edit the publication type you want to appear next to last 
and add exactly one space at the beginning of its description.
          2. Next, edit the publication type you want to appear 
second-next to last and add exactly 2 spaces at the beginning of its 
description
          3. ... Continue to add spaces at the beginning of the 
description of each pubtype until you modify the one you want to appear 
first (which should have the highest number of spaces at the beginning 
of its description).
    3. You're done.