PDF Reader Pro supports a full set of annotation tools, you can annotate continuously:
1. Open the file and enter the reading page;
2. There are a set of annotations tools to be chosen, such as Highlight, Underline, Strikeout, Freehand, Text Box, Stamps, Signatures and etc;
3. If you want change properties of the annotations, just click the specific annotation and change the properties like color and opacity;
4. If you want to remove the annotations, just click it and choose Delete.