Errors Window

•	The syntax check is executed when the menu command RDF/OWL \| Syntax Check is selected or when the toolbar icon is clicked.

•	The semantics check (for OWL Lite and OWL DL ontologies) is executed when the menu command RDF/OWL \| Semantics Check is selected or when the toolbar icon is clicked. The semantics check always includes a syntax check.

If the test returns a positive result, a message about the ontology being well-formed (syntax check) or partially consistent (semantics check) is displayed in the Errors Window. The semantics check (for OWL Lite and OWL DL ontologies) is a partial consistency check and returns a positive result (partially consistent) if no error or inconsistency is found.

Below the title bar of the Errors Window is a bar containing buttons that allow you to: (i) configure the display of messages in the Errors Window; (ii) navigate the messages in the Errors Window; and save messages to the clipboard. See screenshot below.

These buttons are described below, and a tooltip for each is displayed when the cursor is placed over it.

Clicking the Filter button (leftmost button), pops up a menu (screenshot below), in which you can select what messages are displayed in the Errors Window.

In this menu, you can select whether errors, warnings, information, and/or inconsistency warnings should be displayed in the Errors Window. To select a particular message type for display, select it so that it is checked. The Check All option causes all message types to be selected for display; the Uncheck All option deselects all message types.

The Next and Previous buttons (second and third from left) enables you to navigate up and down the list of messages, respectively, one message at a time. When a message is selected, this is indicated by its being highlighted (see screenshot below).

You can also select a message by clicking it. Selecting a message is useful if you wish to save a particular message to the clipboard.

There are three ways in which messages can be copied to the clipboard: (i) copy the selected line; (ii) copy the selected line and its children; and (iii) copy all messages. The corresponding buttons are the fourth, fifth, and sixth from left. Placing the cursor over these buttons causes a tooltip for that button to be displayed.