The idea is to look up words based the parts their kanji contain, when copy-paste isn't possible (like anything printed). For example, say I want to lookup 警戒. I see that kanji #1 contains 言 and that kanji #2 contains 廾 and 戈. So I want to search for all words matching this. Query syntax: [言][廾戈]
Actually, no. When I wrote it, I expected to use kanjidic, but in the end I only use edict, enamdict, radkfile (here are the radicals) and wordfreq_ck. Possible future plans include adding support for specifying kanji using stroke count (or any other info in kanjidic really) -- then I'd use kanjidic. (Also, such support would be kind of easy to implement, I'm just having trouble coming up with a good and easy syntax for it.)