Hi Steve,
Your first question) you could do that with the help of FlowHeater Template Definitions. You have to create a new Definition. Create your CSV text file output format you needed. If you finish go to the menu option "File->Save as Template ..." and save this definition as a template. If you create next time a new Definition you can choose what you want to create - A Empty Definition or a new Definition based from your template Definition.
Your second question) With the Help of the Substring Heater you can limit the output content of this field to the maximum length. If you need to output a CSV field with always the same length you can use two ways.
- Use the Format Heater, and set the output length for this content
- In the Textfile Configurator and set the length for the field you want (Tab->Fields / Data types)
In these two cases the certain CSV fields have always the same output length.