320x240 Landscape

I also wanted to ask the same question about 320x240 Landscape mode for the older SDT028TFT-TS (as Mouser still has some in stock) the datasheet states:

"(3) Orientation: both Portrait and Landscape mode are available (controlled by software, refer to IC spec)"

I have been over and over the ILI9320 spec but can't find the information I'm looking for - could someone please help? Thanks!