I just downloaded the software and am trying out the emulator and I am surprised that it isn’t obvious (to me) how to tab to the next enterable field.
The EN key means “English”, not enter.
The bottom rightmost key IS the ENTER key, but that performs a submit of the page and strangely, results in the whole page being zoomed.
Where’s the Tab key so I can set focus to the next enterable control?

If you click the TextBox press PageUP then you can use your keyboard to input (and press tab to change textbox). I think there is no TabKey in SIP, no necessary if you have multitouch.