The Printer check box is used to limit the available fonts shown in the Fonts list.
If this check box is checked, the list of fonts available is limited to those supported in the print drivers.
If this check box is not checked, the list of fonts available includes all installed outline fonts.
The number of fonts available also depends on the state of the Fixed Width check box. If the Fixed Width check box is checked, the fonts available are limited to fixed width (monospaced) fonts, regardless of the Printer check box state.
The number of fonts available for each setup is shown in the Nbr of fonts window at the upper right of the dialog.