The rules are cryptic and incomplete concerning katanas, and their
relationship to light/laser swords, etc. To wit:
The character sheet lists Katana as a skill, and there are references
to it as such in the combat section. In the equipment list for
LightSword there is a reference to how only a katana/10 adept can
use it to it's full potential. But what that potential actually
does is also cryptic. There is no Katana skill listed in the skills
section of book 1.
So, here is how this will work out for us:
Katana skill
10 levels
Cost: 1SP or 5 weeks study/level
Pre-requisites: Dex, Agility, Con
Max Expertise: 1/4(Dex+Agil)+1
Laser/LightSword skill remains the same, but with one slight
change. To raise skill to 11 or 12, one must be a Katana/10 adept.
Lower levels of skill, to 10, have no Pre-Requisite skill, but that
last little bit takes a lot of effort.