14-37u To zoom in and outTo double the size of the displayed image, press + or perform the following operation:1e(View) – 4:Zoom In.To halve the size of the displayed image, press - or perform the following operation:1e(View) – 5:Zoom Out.u To zoom the screen image to fit the window areaPress - or perform the following operation: 1e(View) – 6:Zoom to Fit.• This will enlarge or reduce the currently display image so it fills the screen.→NoteThe above operation does not apply in the case of a graph drawn using 3e(Draw Spec)7: Function f(x).k Adjusting the Lightness of the Background ImageYou can adjust the lightness of the background image while a g3p file is open in the Geometrymode. To adjust image lightness, press K(Option)e(Properties) 4:Fade I/O and thenperform the procedure from step 2 under “To adjust the lightness (Fade I/O) of the backgroundimage” (page 5-12).4. Using Text and Labels in a Screen ImageYou can use the procedures in this section to insert text into a screen image. You can also editthe labels that the calculator inserts automatically for objects, and add labels to objects.k Inserting Text into Screen ImagesYou can use the following procedure to insert text into a screen image and to edit existing text.u To insert text into a screen image1. Move the pointer to the location on the screen where you want to insert the text.2. Perform the following operation: K(Option) – 1:Text.• This will display a text input dialog box and automatically switch the calculator’s keys toAlpha Lock.