Macro A symbol, name or key that represents a list of commands, actions or keystrokes. Many programs allow you to create macros so that you can enter a single character or word to perform a whole series of actions. In a way, macros are like simple programs or batch files. Some applications support sophisticated macros that even allow you to use variables and flow control structures such as loops. Password A set of secret characters or words needed to gain access to a computer or to files and programs within the systems.
Passwords ensure that only authorized users can reach certain information.
Patch A piece of code inserted into a program to temporarily fix a defect. While most users do not consider a patch a shortcut or a shabby way to fix a problem, adding too many can make the program difficult to maintain. A PC that fits in the user's hand. Some palmtops come equipped with basic word processing or spreadsheet programs and modems for sending and receiving faxes and e-mail messages. PKI PKI is short for Public Key Infrastructure, a system of digital certificates and registration authorities that verify and authenticate the validity of each party involved in an Internet transaction.