BEFORE DISPLAY Clause

BEFORE DISPLAY clause specifies the statements that are to be executed before any information is displayed to the screen array. A DISPLAY ARRAY statement can contain only one BEFORE DISPLAY clause. The following example of the BEFORE DISPLAY clause is used to display a specified row of the program array at a specified line of the screen array with the help of a built-in function:

 

Here the current_row is a variable of integer data type.