Christophe Grandsire:
> [...] I do have
> difficulties seeing those "secret pictures". In fact, when I see
> them, they
> appear inversed to me (what should be in front appears back, and
> vice-versa). I
> don't know where it comes from...
I had that problem when I first tried to do those things. I
discovered I was focusing _in_ instead of relaxing my eyes to
let the picture appear. I notice that I can use either techinique
on my keyboard to juxtapose letters; _in_ gives me a clearer
but apparently smaller image. I've been doing this since I was
a small child (probably explains my eyeglasses prescription!).
-Tone