Field help (OPTTYP)

Some standard amortization methods can include specific options.
The available option types are the following:

• Belgian method option available for the DB - Belgian declining and LB - Belgian linear methods.
• Italian method option available for the IT- Ordinary / Anticipated.
• German method option available for the DA - German digressive method. 
  Note: When it is defined, this option is also implicitly applied to the DX- Mixed German digressive method.
• Linear method option available for the LP - French linear method.