what does Optimize dictionaries mean?
When you load a new dictionary file, you can optimize it, which means that a special cache file will be created and that makes a searching process work much faster. This option is available for XDXF dictionaries. When enabling opimialization for StarDict files, it is unuseful. If you load a new dictionary and not optmize it, you can do this anytime, by choosig Optimize dictionaries from Dictionaries submenu.
