I would like to suggest an idea for Adobe Acrobat. The suggestion would be to allow people to insert vector lines and basic shapes to a PDF file. This vector lines and shapes could help us folks that may be looking at sheet music and or make a musical note correction to the sheet music. Also, allow a plug-in to insert musical notes and other music iconography onto a blank PDF file of sheet music. Adobe Acrobat can really be used by the music industry all around the world if they only can see the power and simplicity of using Adobe Acrobat.