Hello,
i know it's possible but i don't remember how reduce the windows of the XD Tool's in the screen ?

Open your xd.ini with the editor. You can change all possible options here.

Thank you Marc

For info if that can help !!!

it's this lines ; (change the SCALE by default on 100)
for me it's better on 90 of my screen .


; MoTeC HUD Scale
; Note: Only the MoTeC-Display can manually be scaled.
; Everything else is scaled automatically according to your screen resolution
; If the MoTeC display is set to tab-mode, the other info is also scaled (Session-Info/Standings)
; Value given in percentage
; 100(%) Scale = 1024x768 = 1:1 = No Transformation
; 0 = Disable scaling
Scale=90