[plt-scheme] cutting and pasting snips

Matthias Felleisen wrote:
> I bet you
> know that they can do this already with a right-click on the mouse. They 
> are just too lazy.

I don't think this is quite right, is it? Right-click (control-click for 
me, on a Mac) on what appears to be text spelling out a decimal number 
but is in fact a snip representing a rational brings up a menu that lets 
me change the representation to mixed or improper fractions, but there 
isn't anything in that menu offering to convert it to plain text. 
Furthermore, when I type 0.25 or 3/4 as constants in my program, in the 
Definitions window, and then control-click on them, I cannot change the 
representation; they are not snips, and I don't know how to make them 
snips, except to generate them as values in the Interactions window. So 
it appears that snips are snips and text is text. --PR