Board Thread:Questions and Answers/@comment-64.233.173.46-20160505164127

When I'm take a look at the 'Sword Skills' page. I take a look at the notes and it says

Notes:

1 . Written in katakana in the novel.

2 . Written in kanji and furigana in the novel.

Does that mean the sword skills name were written in katakana, kanji and so called 'funigana'?

And what the heck is funigana !!? 