Reference (computer science) In computer science, a reference is a value that enables a program to indirectly access a particular datum, such as a variable or a record, in the computer's memory or in some other storage device.
For a standard-size, double-hung, double-pane (energy efficient), vinyl window, expect to pay between $450 and $600, including installation. Wood windows are more expensive. The cost of a wood replacement window can range between $800 and $1,000 per installation. If the entire window and framing has to be removed (down to the studs), be prepared to add at least $50 to $100 per installation.
Cost of Egress Windows. If youâre simply replacing an existing egress window, budget anywhere from about $200-$1,200, depending on the material. A vinyl window will fall on the low end of that range, fiberglass will fall somewhere in the middle and wood will fall on the higher end.