& - The ampersand character, which is used for string concatenation Abs – A function of the Math class that returns the absolute value of a number Access Key – A key pressed with Alt in order to select an object. These are programmed with the ampersand character. Address – The location in the memory where a value is stored for a given variable. Argument – A variable or value passed to a procedure. These are also called parameters. Array – A set of elements that are all of the same data type. It is a composite data type. Combo box control – A text box for typing an entry and an arrow that can be clicked to choose an item from a predefined list. Control Class – Built in classes for creating graphical objects easily in Visual Basic .NET. Dynamic – An item which is dynamic is changed or resized (arrays) by using the ReDim statement. Element – The data that makes up an array. Enabled – The property of various things that determine if the control can be used or not. Focus – An object with focus receives user input from the keyboard. Format – A built-in function that displays a numeric input as money, decimals, or scientific notation etc. Function – A function is a procedure that performs a task (usually based off parsed arguments), and returns a value. FV – A built-in function that returns the value of an annuity. It parses rate, term, and amount. Index – The location of an element in an array (or a listbox). Generally, the first item is indexed at zero. Input Box – An input box is an extremely simple prompt that grabs information from the user. IsNumeric – It is a built-in function that returns a Boolean value after determining if the argument is a number or not. Items.Add – A procedure in the ListBox class which adds a string to a new row in the listbox. Items.Clear – The procedure which clears all of the items in a listbox. Lifetime – The time which a variable exists in memory. Locals exist as long as their procedures are running. Globals last for the whole program. Linear Search – This is the simplest searching algorithm, which checks every element until the value is found or until the end of the array has been reached. List Box Control – A list box displays a list of items, and uses a scrollbar if necessary. Pmt – The built in payment function that parses rate, term, and principal. Postcondition – A condition that is always true after execution of some code. Precondition – A condition that is always true prior to execution of some code. Procedure – A block of code written to perform specific tasks. Preserve – Used along with a ReDim statement when the contents of an array should be preserved. PV – A built-in function which returns the present value of an annuity. It parses rate, term and amount. Reference parameter – These are used in procedures which should return a value. Round – A function of the math class which returns a Double that rounds a number to a given amount of spaces. Selected Item – This is the item that is highlighted in a form. Sign – A function of the Math class which returns 1, -1, or 0 based on the sign of the number. Sorted – A listbox or array is considered sorted if all the elements are in alphanumeric order. Specification – A specification, or spec, is essentially an objective or mission statement which describes the purpose of an application. Sqrt – A function of the Math class which returns the square root of a given number. Static Variable – Static Variables are extended local variables. It can be used only in the local procedure, but its value is kept throughout the program. Step – Used in For… Next loops to change the loop increment from its default value of one. Sub – Subs are procedures which can be called by the program by Handles or the Call statement. Substring – The substring is a method of the string class which parses the Start Position and the Number of Characters to return a section of a string. TabIndex – The tabindex is a property of many objects in Visual Basic .NET, and it determines the order in which the focus moves when the user presses the TAB key. Value parameter – Value parameters are used in procedures which have to pass values, which generally vary depending on user inputs. Visible – It is a property of Visual Basic .NET objects which determine if they are visible on the form or not.