A Logos user recently contacted me with this question:
The ESV is my preferred Bible and I enjoy using the interlinear pane that displays at the bottom of the Bible. I recently noticed italicized English text for some of the words. In the KJV italicized text indicated inserted words in English that weren’t in the original. In this interlinear pane, however, I clearly see Greek words below the English, so why are some English words italicized?