It is easy to create this situation in v2.60.01.

If you enter a symbol from a library on to a schematic then go into the
library/symbol editor and change it (say a pin position) you can then place it
again on the schematic. As the two symbols are not identical there will be two
entries in the database with the same name but different <SYMBOLDEF id='??'>
entries.
eg:
<SYMBOLDEF id='1'><NAME type='0'>Fred</NAME> {--Definition text--}
<SYMBOLDEF id='2'><NAME type='0'>Fred</NAME> {--definition Text--}
(I only reversed the orientation of a pin.)
This sounds like what Mike has done.

If you 'replace' (<right click>/Replace Symbol) all the original entries then
the original '<SYMBOLDEF id='??'>' entry will be removed leaving only the new
one.

v2.70.00 seems to be the same.

Hope that helps

Phil


--- In tinycad@..., "Don Lucas" <Don.Lucas@...> wrote:
>
> What version of TinyCAD are you using?
>
> The .dsn file is an ascii file containing XML statements. If there are
actually multiple definitions of a symbol in the design, then you should be able
to find it in the .dsn file by editing with text editor such as notepad. If you
locate such a problem, please send me a copy of the design file and any
information that you might have that would allow me to reproduce the problem.
>
> Thanks,
>
> Don Lucas
>
>
> --- In tinycad@..., "mkishinevsky" <mkishinevsky@> wrote:
> >
> > I am struggling with a problem that schematic accumulates multiple
SYMBOLDEFs for the same symbol. It is especially dangerous because I changed pin
length of a symbol at some point, but both versions are still in the .dsn file.
As a result, sometimes pins get disconnected from wires, especially when I
copy/paste schematic to a different file.
> >
> > Is there a way to clean up?
> > The menu item "cleanup" does not exists in newer versions.
> >
> > Thanks.
> >
> > mike
> >
>