# http/sse-comment
Send an SSE comment line — the manual keep-alive form. Comments are ignored
by `EventSource` clients but keep the connection and intermediaries alive.
## Syntax
[http/sse-comment $stream "text"]
## Parameters
- `$stream` — `%SseStream{}` from `http/sse`
- `$text` — comment text (string)
## Examples
[http/sse-comment $stream "still here"] # → true
## Returns
`true`; `%Err{:message}` when the stream is closed, the first argument is
not a stream, or `$text` is not a string. Emits `: <text>\n\n`.
## See Also
`http/sse`, `http/sse-send`, `http/sse-close`