Display specific line item
Is there a method I can access where I can define a single line item to display for modification purposes in the following general scenerio ?
My cart object is eCart1 as standard.
I have 3 products in my cart and I want to modify my order for the 2nd product, so I click on a link that sends me to another page where that product along with it's options are displayed for updating.
I am guessing I need to pass the product id and display index ($eCart1->DisplayIndex) but how do I tell the cart object to only display that line or access the individual columns from that line to prepopulate the page ?