Absolute References. An absolute reference does not change when you move or copy a cell. We use the $ sign to make an absolute reference â to remember that, think of a dollar sign as an anchor. For example, enter the formula =$A$1 in any cell.bsolute References. An absolute reference does not change when you move or copy a cell. We use the $ sign to make an absolute reference â to remember that, think of a dollar sign as an anchor. For example, enter the formula =$A$1 in any cell.
Cross Platform Component Object Model (XPCOM) is a cross-platform component model from Mozilla. It is similar to Microsoft Component Object Model (COM) and Common Object Request Broker Architecture (CORBA).
Extreme Programming (XP) Methodology. XP is a methodology for creating software within a very unstable environment. It allows flexibility within the modelling process. The main goal of XP is to lower the cost of change in software requirements. With traditional system development methodologies, like the Waterfall Methodology, the requirements for the system are determined and often âfrozenâ at the beginning of the development project.