Where can I find descriptions and labels of these buttons "simutranslator?

[Milko]

Hi

I'm trying to translate the lyrics and the help of the buttons in the picture attached, but I can not understand simutranslator where they are.
Someone can give me some help?

Giuseppe

[Frank]

Simutrans-Ex?

Retire Sim-Experimental

withdraw Base texts
'Withdraw' no exists, I think rename in Sim-Ex

'Sell now' no exists

exists
Sell  Sim-Experimental

Verkauf Base texts
verkaufen Base texts