Changes for easy recognition of 3.0 demos and examples

[Robert Amesz]

Bengt Richter wrote:

> Some possibilities...
> 
> 1. spam should be replaced in all contexts by spom
> 2. it's just resting.
> 3. '/' should be pronounced 'over' or 'zorro'
> 4. '//' should be pronounced 'swish' or 'clang'
> 5. foo, bar, baz may be rendered oho, aha, znord
> 6. ...
> 

6. 'Luxury Yacht' should be pronounced 'Throatwobbler Mangrove'


Robert Amesz (still wondering how you missed *that* obvious one...)