I’m developing a text editor using esp32 to which an LCD display is connected. Currently, to edit a file, I have a single large buffer of characters which is displayed on the screen line by line. I have implemented line splitting so that a word doesn’t break when it reaches the end of a line but shifts into next line. Now, how to handle cursor navigation such that when the user presses the left arrow key when the cursor is at the start of a line, the cursor should move to the end of the previous line, considering that the lines have different lengths and I don’t know where the previous line ended? How does windows notepad do this normally?