[O] disable table in EXAMPLE or QUOTE block

[David Rogoff]

I’m trying to draw an ASCII picture in a BEGIN_QUOTE block.  However, since it 
contains vertical bars, when I hit return, it formats the whole block as if it 
were a table.  How do I stop this incorrect behavior?  I tried BEGIN_EXAMPLE 
but it acted the same.

I can work around it by using  colon-space at the beginning of each line 
instead of begin/end block but it’s a bit ugly.

Thanks - David