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:
- Goal - text field where you eneter the
goal being executed.
- Prolog Text - simple editor, that allows
you to enter and edit Prolog program. In order to apply
changes, you need to reconsult enetered text.
- Run - pressing this button you execute
the current goal.
- Reconsult - this button allows you
reconsult the internal PIE database from the editor.
- Reset - this button removes all facts
and rules from PIE database.
- Clear - this button clears the editor
and goal field. Note, that it is not clears the PIE
database.
- Examples - these buttons allow you to
load and test three popular Prolog examples. After selected
example is loaded, press Reconsult, then Run.
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.