Aubit 4GL SVN-Code

DateAdd and DateDiff. A DATE is a day count in 4GL - day 0 is 31 December 1899
- so adding a whole number adds days. C# has no operator for DateOnly against
an int and none can be added to a type we do not own, so the generator calls
these instead of writing the arithmetic inline.

GetData(out byte[]?, int) for BYTE and TEXT columns. The generator used to pass
the target by value, which could assign nothing. A driver may hand back either
bytes or a string, so a string is encoded rather than rejected - which is what
a program reading a TEXT column into a BYTE variable expects.

UI.ClearWindow: the protocol message existed and the entry point did not.

A report's COLUMN takes whatever the 4GL gave it, commonly a SMALLINT, rather
than requiring an int.