The Postscript code emitted by the PostscriptCanvas is Postscript  
Level 2 compatible.  There are some aspects that need to make use of  
Level 2 features to work at all (and more that actually scream for  
Level 3) so I saw no particular point in making sure that the rest is  
Level 1 compatible, since Level 2 is much nicer to code for.

That being said, I can add some emulations for those parts that can  
be easily emulated, like the ones you mention.  However, you should  
be aware that other features will *not* be emulated, so it is only  
going to be a partial solution.

Regards,

Marcel

> From: Bob Arning <arning at charm.net>
>
> 1. I seem to require a "newpath" before the "moveto" when drawing  
rectangles.
> That was easy to fix, but would the addition cause problems elsewhere? 
>
> 2. "selectfont" does not seem to be supported on my printer, so  
lines like
>
> /Helvetica [ 10.8 0 0 -10.8 0 10.0] selectfont
>
> cause problems. I fixed this by changing the emitted PostScript to: 
>
> /Helvetica findfont [ 10.8 0 0 -10.8 0 10.0] makefont setfont
>
> Is there a reason not to use the second version?
>
> 3. "<<" does not seem to be recognized by my printer. This is used in  
> 	3a) getSymbolcharproc and
> 	3b) in the writing of bitmapped images.
> Does anyone know a backward-compatible way of doing the same thing?