I was experimenting with the new PDF file option in the eViewer as well as editing the catalog epub with the editor
Q1. On the catalog's TOC, the Genres section spells out each separate genre by name, but Authors and Series are grouped by first letter. Could each author and each series also be in the TOC (maybe as a level 3)? That would make it easier to use the TOC.
Q2. I was going to replace the catalog's style sheets with my own (almost the same, mostly font and size changes). Many catalog class names are specific and I assume are always named the same, making it easy for my to come up with a replacement class, or just re-use the one that's there
However, some classes use the .calibre## format. Are these numbers the same each time I generate the catalog?