Xyzzy,
I guess you're about learning about the details of XnView to prepare yourself for the translation of the on-screen texts, wish is a good idea.
Xyzzy wrote:One more

How can I display windows with caption "Operation" (with controls From, To and others)?
X.
Don't know which dialog you mean.
I think you're aware that you're about creating a bit messy topic:
The questions on menus and options might be interesting for all people, but now you're adding general questions regarding the usage of XnView.
I suggest that you continue posting questions regarding specific options, here. For questions on menus and other please contact me (I'll send you my mail address).
Greetings,
Helmut