Drag and drop lines and parts
This feature is available from app version 3.2.7 (which is currently in beta testings)
You can reorder lines and parts with the drag and drop feature
Long-press on the label of the part (Chorus, Verse, Bridge, etc). Wait until the part is highlighted, then drag the part to a new position and lift your finger.
Drag & drop entire part
Long-press on the end of the line, where the line repetition is displayed. Wait until the line is highlighted, then drag the line to a new position and lift your finger.
Drag & drop single line
Dragging of chords is not (yet) supported.