Nits are small and stubborn, glued in place. The symbol stands for tiny details that hold on, and for the patient, fiddly work of removing them one by one.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.