Use the drop-down menu showing "Project Budget" at the top of the budget to see different item types (budget items, change orders, budget revisions, and hidden items).
Items highlighted with a yellow background indicate line items that need to be addressed for bid and buyout.
The colored progress bar on the left-hand side of each line item shows costs to-date against budget. Hover your cursor over the progress bar and click "View Bills by Cost Code" to see expenses charged to that line item.
The icon's color indicates whether the item is a draft, budgeted, awaiting IFB responses, or bought out.