A frame decides what is shown and what is left out, so it stands for the way you choose to see a memory or a person. An empty frame is read as a place still waiting to be filled.
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.