FBReader search features

Hi,
I have also sent an email to FBReader about this, but thought I'd ask you all as well.

I am Currently using FB Reader on Android 7.
I am contemplating getting the paid version of this product since I like the free version. In this connection I had some questions about features in the paid version
a) Does it provide a means to highlight a string in the text and a context menu option to search the book for that string?
b) Does the search box have a drop down for previous searches?
c) If I search on a string and move to another location in the book is there an option to return to where I was?


All these are features I have gotten used to in the iBooks reader.

Thanks!