PROJECT  FLR ( Funding Limit Reconciliation ) ------>  Large variations in the periodic expenditure of funds is usually undesirable across any business/project operations. Therefore the expenditure of funds is frequently (periodically ) reconciled   ( meaning reviewed,monitored and adjusted ) with the disbursement of funds ( either from funding source or sponsor ). FLR usually has effects of delaying project schedule.

PFR (Project Funding Requirement )---------> After Cost Performance Baseline (budget) it serves as a snapshot of budget against which you can actually compare your expenses.But just having this number is not enough. You need to plan out HOW and WHEN will you actually spend it also. This information needs to be documented in what is called PROJECT FUNDING REQUIREMENTS, which makes sure how you will make sure your project has money when its needed and that you have enough to cover unexpected risks as well as knowne cost overruns /  increases that usually change with time.

This information can be found in HEAD FIRST PMP, RITA and PMBOK ofcourse