This is METAFONT, WAITS Version 0.4 (preloaded base=plain 84.10.21)  22 OCT 1984 20:09
**badio
(BADIO.MF[MF,DEK]
>> mode.setup
! Isolated expression.
<to be read again> 
                   ;
l.1 mode setup;
                % an intentional error!
? 
! Extra tokens will be flushed.
<to be read again> 
                   :
l.2  em#:=10pt#:
                 cap#:=7pt#;
? 1
<recently read> :
                 
l.2  em#:=10pt#:
                 cap#:=7pt#;
? i;
The letter O
>> l0
! Improper transformation argument.
<to be read again> 
                   ;
penpos->...X2)l=((EXPR3),0)rotated(EXPR4);
                                          z(SUFFIX2)=0.5[z(SUFFIX2)l,...
l.10  penpos1(thick,l0)
                       ; penpos2(.1[thin,thick],90-10);
? i rotated 10
>> 0.08682thinn+144
! Undefined x coordinate has been replaced by 0.
<to be read again> 
                   {
<for...> ...)l}else:if.known.dz(SUFFIX0):{
                                          dz(SUFFIX0)}fi.fi.fi ENDFOR
<for...> ...known.dz$:{dz$}fi.fi.fi.endfor
                                          ; ENDFOR
penstroke->...:{dz$}fi.fi.fi.endfor;endfor
                                          .endgroup;if.cycle.path_.l:...
l.15  penstroke(1,2,3,4,cycle)
                              ;
? s
OK, entering scrollmode...
>> -0.08682thinn+144
! Undefined x coordinate has been replaced by 0.
<to be read again> 
                   {
<for...> ...)r}else:if.known.dz(SUFFIX0):{
                                          dz(SUFFIX0)}fi.fi.fi ENDFOR
<for...> ...known.dz$:{dz$}fi.fi.fi.endfor
                                          ; ENDFOR
penstroke->...:{dz$}fi.fi.fi.endfor;endfor
                                          .endgroup;if.cycle.path_.l:...
l.15  penstroke(1,2,3,4,cycle)
                              ;
I need a `known' x value for this part of the path.
The value I found (see above) was no good;
so I'll try to keep going by using zero instead.

>> -0.9848thinn+259.00002
! Undefined y coordinate has been replaced by 0.
<to be read again> 
                   {
<for...> ...)r}else:if.known.dz(SUFFIX0):{
                                          dz(SUFFIX0)}fi.fi.fi ENDFOR
<for...> ...known.dz$:{dz$}fi.fi.fi.endfor
                                          ; ENDFOR
penstroke->...:{dz$}fi.fi.fi.endfor;endfor
                                          .endgroup;if.cycle.path_.l:...
l.15  penstroke(1,2,3,4,cycle)
                              ;
I need a `known' y value for this part of the path.
The value I found (see above) was no good;
so I'll try to keep going by using zero instead.

[79])
*end

Output written on BADIO.GF[MF,DEK] (1 character, 1872 bytes).