[GNC] Invoicing

[John Walker]

I have not used the invoice sections of GnuCash for some time. The work 
done since that time up to version 4.8 has been astounding and of course 
caused me to go through quite a learning curve.

I have a few questions:
I believe the only header images that are appropriate for stylesheets 
are 100dpi png formats up to 15cm wide.  Is this correct?  I experienced 
quite a few adventures working this out. Is there a better method 
available for working with images in stylesheets besides trial and error?

I was able to make up a custom stylesheet and get a satisfactory invoice 
template.  However, it did not save when I shut down Gnucash.  What am I 
doing wrong?

Is there any documentation concerning the CSS-based stylesheet 
(experimental)?  Is this an area a mug punter like myself should be 
playing with?

Cheers
John