/** Write to a channel, from a user, using va_args for text
* @param user User whos details to prefix the line with
* @param text A printf-style format string which builds the output line without prefix
* @param ... Zero or more POD types
*/
/** Write to a channel, from a user, using va_args for text
* @param user User whos details to prefix the line with
* @param text A printf-style format string which builds the output line without prefix
* @param ... Zero or more POD types
*/