Highlights
To search for a hint you need to specify some text you think it was highlighted by the author (a highlight). If you suspect multiple highlights, just concatenate them with @, like this:
highlight1 @ highlight2
Highlights are case-insensitive, so searching for HiGhLight will yield the same results as highlight.
When crafting a new hint, wrap text between asterisks (*) to highlight it. For example:
this will be a valid *highlight*
Use the appropriate highlights to make your hint discoverable — or don't, and express untraceable thoughts...
Regular expressions
Coming soon