RTL mode vs. LAND modes?

I’m looking for some clarification on what LAND mode is/does?
Does it require GPS?
Does it work either way with or without GPS?

And I guess RTL is RTL and land if a parameter is set to zero.


Still confused:

A s (Y) Reduces altitude to ground level, attempts to go straight down

A= Automatic control

s= “Pilot controls climb rate” (how does this work when landing? and how is this “automatic”?

(Y) *not “Y” for GPS and no description what “(Y)” means as opposed to “Y”


If there is GPS lock when Land is enabled it will Land at those coordinates like RTL does. If no GPS it will Land while drifting in the wind.