The first thing you need to do after you added your image to the project is to start to generate glyphs.
Glyphs are basically characters that form a language. For a latin language they would be letters, numbers. For ancient languages, such as hieroglyphs, the would be signs in the image such as a bird, hand and so on.
In GlyphViewer application glyphs have a coresponding area, and they can have have one or more symbols associated from different languages with a degee of confidence. A glyph may have more than one symbol because you may not be sure of which one is corect (for example for incomplete glyphs).
You have the ability to either manually identify glyphs or use an OCR (optical character recognition) method to allow GlyphViewer to identify them for you.
OCR accuracy greatly depends on the image's resolution and how the character distinguashes from the background image. So if you will be using this method always check your results.