The message can include keywords for symbols. In some Siemens telephones is keyword displayed like corresponding picture. With C35i you can choose from 25 pictures:

In C35i firmware exists 12 next pictures morover mostly including corresponding keywords!

But sorry, any hidden keyword is not displayed like picture. This artefact gallery is archeologic curiosity only.

   This picture is Cinema self-evidently, but is used under ill-fated number with inadequate keyword.
Keyword "%Theatre" is suitable for one of hidden pictures.