Again about translation

I have been proofreading once again my italian translation and still
have some question:

1.
#: src/frm/frmQuery.cpp:139 src/frm/frmQuery.cpp:174
msgid "Explain analyse query"

analyse => analyze

2.
#: src/frm/frmReport.cpp:1090
msgid "Failed to parse the XML stylesheet!"

#: src/frm/frmReport.cpp:1098
msgid "Failed to parse the XSL stylesheet!"

What is the difference between and XML and XSL stylesheet? Isn't XSL a
stylesheet per se?

3.
What is the difference from "dependencies" and "dependees"? I couldn't
find the latter on any dictionary. Is it a synonym of "dependents"?

Thanks,
Giuseppe