This section describes how to use and write custom functions within your Fireworkz spreadsheets. It explains what a custom function is, and when it might be useful to create one, and goes on to show you how to create a custom function and to describe the tools provided by Fireworkz for this purpose.
Custom function control statements
Recalculation and custom function sheets
Before you start to use and write custom functions, you will need to understand all the components of Fireworkz spreadsheets, including functions, ranges, arrays and external references. If you are unsure about any of these, read the appropriate section(s) of the User Guide.