PIE Environment

The main window of Web PIE is separated into three frames:

Header

This frame contains PIE logo and the hyperfield to invoke this help.

PIE Control Panel

Control Panel occupies the leftmost frame. It allows you to enter the Prolog program and execute the goal. Control Panel contains the following elements:

Output Panel

Output Panel occupies the rightmost frame. It is here you see tis text. The Prolog program's output (produced by write predicate) is displayed in this panel. PIE itself writes all messages here.