</informaltable>

The <literal>%c</> escape prints a quasi-unique session identifier,

consisting of two hexadecimal numbers (without leading zeros)

consisting of two4-bytehexadecimal numbers (without leading zeros)

separated by a dot. The numbers are the process start time and the

process ID, so <literal>%c</> can also be used as a space saving way

of printing those items. For example, to generate the session