Counters
The code to insert a counter is {COUNTER}. It requires at least one parameter, which is the name of the counter to insert.
Example:
S/N:
{COUNTER;SerialNum}
Assuming the variable SerialNum has the value 42, and a width of 4 characters, then it will be printed like this:
S/N: 0042
Additional number formatting parameters can be added to control how the counter is formatted, e.g. the width and padding character can be changed.
Batch:
{COUNTER;SerialNum;WIDTH=5;PADDING=#}
This will instead be printed as:
S/N: ###42
See the Number formatting section for more advanced examples.