When searching a Flow board, the ToC is affected to reflect the current results:

• The ToC icon (on top) will show the number of topics with some matching results.
• Only topics where matches are found will be displayed in the ToC until the search query is cleared.
• For each topic, the number of matches is shown on the right highlighted with a different level of intensity. the intensity is based on the distribution of results: if a topic has 80% of the matches, it will be 8x more intense than one with 10% of the results (this can be achieved with different transparency levels).