The symbol '$' is used to retrieve the value of Internal Objects. For example, '$' can be used to fetch the ClosingBalance or Name field-value of the Internal Object LEDGER.
[Field: My Field]
Set as: $Name
Symbol '$$'
The symbol '$$' is used to retrieve the Function Values in TDL. For example, '$$' can be used to fetch the Date as shown below.
[Field: My Date]
Set as: $$MachineDate
There are several Internal functions in TDL which shall be discussed in the forth coming sessions.