Indicates you have limited info and there might be more to the story.

Self-Limited Knowledge

Shows that you're not claiming full understanding, just what you're aware of.

Not Absolute

Used to ask someone to confirm or deny according to what they know.

When asked, it signals you should provide a personal judgment or guess.

Reminds that what follows is opinion-based, rather than fact-based.

Used when you express an evaluative decision or preference.