ON FILL BUFFER block
The ON FILL BUFFER
block is used to fill a page of rows into the dynamic array,
based on an offset and a number of rows.
This data block is only used in DISPLAY
ARRAY
data blocks.
The offset can be retrieved with the FGL_DIALOG_GETBUFFERSTART()
built-in function and the number of rows to provide is defined by the
FGL_DIALOG_GETBUFFERLENGTH()
built-in function.