[Zubersoft]

As Skip mentioned, first draw a rectangle for where you want the text, enter it, and then use the nudge tool to put it perfectly in place. If you need to hide content behind the text, set the fill color for the textbox to white. If you are trying to just write on the score instead of using the text tool and you want to erase content on the PDF itself, you have to use a white box to hide the content. I do not support modifying the image embedded in the PDF - the eraser tool is not meant for that. The eraser tool just allows you to draw a box around annotations you've created in MobileSheetsPro that you want to erase (or sections of those annotations).

The easiest way to hide the pdf content is to tap the pen tool, switch the draw type to rectangle, set the fill to white and then draw the box using your finger over any content you don't want to be shown. You can then add content on top of that white box afterward if needed.