Set buffer mybuf to value 'hello':
    {buffer.set(mybuf,'hello')}
Buffer exists ?
    {buffer.exists(mybuf)}
Read the buffer, result will be hello:
    {buffer.get(mybuf)}
Remove the buffer:
    {buffer.remove(mybuf)}
Buffer exists ?
    {buffer.exists(mybuf)}
Since the buffer no longer exists, the default will be used:
    {buffer.get(mybuf,default='missing')}

Set buffer mybuf to value 'hello':
    
Buffer exists ?
    true
Read the buffer, result will be hello:
    hello
Remove the buffer:
    
Buffer exists ?
    false
Since the buffer no longer exists, the default will be used:
    missing