Does each line have a specific meaning other than yang or yin?

Yes, they do. And whole books have been written clarifying those meanings. When a line is a moving line it is said to be a directive for action, and so much attention has been paid to the meanings of all the lines over the centuries.

eks0013 said:

Does each line have a specific meaning other than yang or yin?

Click to expand...

Actually the meanings of the lines aren't related to Yin and Yang at all - the book was written long before Yin and Yang. They do have meanings that are related to aspects of the hexagram that they sit within and to the hexagram that they change this one into.

Try searching 'line positions' in the search site function here - there's been a lot of past threads on this very issue

Please read my examples:
http://www.onlineclarity.co.uk/friends/showthread.php?p=160765#post160765
http://www.onlineclarity.co.uk/friends/showthread.php?t=15195
http://www.onlineclarity.co.uk/friends/showthread.php?p=160650#post160650

If you check my profile, you will see many examples.
Each line has a character and an animal character assigned to it, along with a five element.
The entire hexagram sits inside one of the 8 houses.
Change line means change at the time of reading (immediate changes)
Line not changing, but with change with time: one has to analyse the timing of month, day, hour.

There are 3 ways to analyze a reading:
1. Hexagram meaning, trigram meaning
2. Change line meaning
3. Six line analysis method (very advanced, technique only taught in Chinese books). One must understand the fundamentals of Chinese fortune prediction (5 elements, searching older literature) to produce a better picture.

Iching is also the book of change, translated into >60 languages.