I use Symbol Library when I draw a display on Processbook or Vision
I sometimes need to draw a graphic object which does not exist in symbol library
Maybe I could draw entirely new ones, or I could save time by using external symbo images
A little problem is that I don't know where to find the symbol images(or vector image)
I googled but there are usualy pretty simple images, those are appropriate for making PPTs, not for drawing PI displays.
Do you have any symbol image source web sites?