In addition to the functions discussed in this topic, there are character functions that are available only in the Maintain language. For information on these functions, see Maintain-specific Character Functions.
For many functions, the output argument can be supplied either as a field name or as a format enclosed in single quotation marks. However, if a function is called from a Dialogue Manager command, this argument must always be supplied as a format, and if a function is called from a Maintain procedure, this argument must always be supplied as a field name. For detailed information about calling a function and supplying arguments, see Accessing and Calling a Function.