In Jeet documentation I see column (ratios = 1, offset = 0, cycle = 0, uncycle = 0, gutter = jeet-gutter) with the equal sign.  
Then in the following paragraphs, the expression is using colons: column(1/4, cycle: 4) 
I don't understand why the documentation is using two different attribution methods. In coding, afaik, there is a big difference between : and =, and I don't understand why the developer is using both. 
Thanks
 
    