Chart reading success!

Chart and diagram reading usually escapes me.  I can kind of read simple knitting charts but the thing is the symbols seem to change from one designer to another.  And crochet,  (pshht),  totally could not get! Until I found a pattern that I would like to modify the width to make a prayer shawl.   It is by Annette Patavy and it is http://www.ravelry.com/patterns/library/echarpe-pointes-violettes-violet-points-scarf on Ravelry.    I understand the easy chart!!