Redraws existing guide lines from trace information. If there are many drawing elements, redrawing may take some time.
Automatic redrawing is performed as needed when changing transparency, using Undo/Redo, using Auto Fit, changing the window size, and in similar cases.
Use Option > General > Auto Redraw to enable
or disable automatic redrawing. When automatic redrawing is
disabled, run Edit > Redraw when needed.