I hope this helps:
"Desktop Alpha smooths the edges of this skin so you can see light effects. May cause CPU usage to increase dramatically."
"When Tickerscrolling is enabled, all textlines will scroll their text if it is too large for the given width. (eg. the Songticker) It is recommended to disable Tickerscrolling if you have a slow CPU."
OR what I liked better, but I wasn't sure if it was clear:
"When Tickerscrolling is enabled, all textlines will scroll if it is too large for the given width. (eg. the Songticker) It is recommended to disable Tickerscrolling if you have a slow CPU."
I do like the edit that you made:
"Enabling desktop alpha allows the use of translucent layers, which is required for backlight visualization."