Syntax and Behavior

In RM/COBOL the following syntax allows to create and destroy a pop-up window:

DISPLAY WINDOW-CONTROL-BLOCK LINE WCB-LINE POSITION WCB-POS CONTROL "WINDOW-CREATE, ...". ... DISPLAY WINDOW-CONTROL-BLOCK CONTROL "WINDOW-REMOVE".

isCOBOL supports this syntax with two small differences:

1.	The POP-UP clause must be specified

2.	The CLOSE statement must be used to destroy the pop-up window

The above code should be changed as follows:

DISPLAY POP-UP WINDOW-CONTROL-BLOCK LINE WCB-LINE POSITION WCB-POS CONTROL "WINDOW-CREATE, ...". ... CLOSE POP-UP WINDOW-CONTROL-BLOCK CONTROL "WINDOW-REMOVE".

See DISPLAY and CLOSE for more details about the above syntax.