...concerning your editing comment for the page Tentative NumPy Tutorial:

"Because of the wiki editor, I think the only way to show C[:,1] is C[...,1]."

There are different solutions possible:

• Display text as inline code: Markup `C[:,1]` gives C[:,1]

• If you want standard text format use `` to break link-detection: Markup C[``:,1] gives: C[:,1]

HTH, David.