${CONTEXT} Current context
${PRIORITY} Current priority
${CHANNEL} Current channel name
+${EPOCH} Current unix style epoch
+${DATETIME} Current date time in the format: YYYY-MM-DD_HH:MM:SS
There are two reference modes - reference by value and reference by name.
To refer to a variable with its name (as an argument to a function that
${CONTEXT} Current context
${PRIORITY} Current priority
${CHANNEL} Current channel name
+${EPOCH} Current unix style epoch
+${DATETIME} Current date time in the format: YYYY-MM-DD_HH:MM:SS
There are two reference modes - reference by value and reference by name.
To refer to a variable with its name (as an argument to a function that