Citrix : What is the difference between outputmodes

Question

In Citrix there are four available outputModes:

• OutputModeNormal
• OutputModeWindowless
• OutputModeRenderless
• OutputModeNonHeadless

When using Simulation API I don't see any difference between OutputModeNormal and OutputModeWindowless.

From documentation, I would expect OutputModeWindowless to show no window on client side, but I get the window whatever I do.

Is this expected, and if yes, what is the real difference ?

I've searched a lot without any success:

• https://discussions.citrix.com/topic/278410-outputmode-windowsless-and-renderless-help-on/