For more, see Project Settings
To activate: File menu / Settings
Configure the fillstyle or hatch pattern GeoSync uses to highlight features when selected. GeoSync uses a transparent fill (no fill pattern) as a default.
To use:
Open Settings dialog.
On the General tab, locate the Selection Fillstyle field.
The default selection fillstyle is transparent. To change the fillstyle, click on the far right side of the field to the right of Selection Fillstyle.
A combo-box arrow button appears. Select the button. A combo-box appears
Select a style / pattern from the combo box.
Select OK.