:sig
function ob_close(request : capture dval)

:params
request : the caller's request, captured when omitted

:content
`ob_close()` discards the current output buffer and returns to the previous buffer.

Use it when you do not need the buffered output.

:example capy render
ob_start()
print("discarded")
ob_close()
print("kept\n")

:see-group
output
