What do you call this... a point in a song where all instruments stop abruptly. For emphasis at end of a verse or chorus. Like, if I am playing guitar, I'll hit the last chord and then mute all strings. Then start playing again when the song kicks off again.

I am writing this on a chart as a period with a hat over it. "." with a "^" over it.

If I am to let the chord ring instead of mute the strings, I write a period with a semi-circle above it instead of the pointy hat. Is this how it should be symbolized?

Also, do you put this symbol above the chord or beside the chord in the chart? (It can get kinda busy-looking if I write it above the chord if my chart is squished up tight with not much room between lines.