Are you using PDFescape Desktop or PDFescape Online?
First, you will need to make sure you are in Edit Mode.
In the Edit Module, you will find the Underline feature in the Font section. When you select it, the color pallet will open. Choose the color you’d like to use for your underline.
Once you have chosen your color your mouse icon will change. Place your mouse icon over the portion of text you’d like to underline. Hold down the left mouse button and drag over the text that should be underlined.
When you release your mouse, you will see the underline:
You can leave a comment in your annotation. Click on the View in the top left corner to go into View Mode. Then select your underline and a comment box will appear.
Click on your underline again to close it.
You can change the appearance or content of your underline at any time. While in Edit Mode you can click on your markup to select it. Then choose the Properties icon. You can set the Author and Subject for this underlined by clicking next to them and adding your text.
In order to delete your underline, click on Edit in the top left corner to enter Edit Mode. Then right-click on it and choose Remove:
Click on the annotation section in the upper left corner. You will see the Underline feature.
To underline, place your cursor at the beginning of the text. Hold down the left mouse button and drag the icon over the text that should be underlined.
Release your mouse button to see the underline:
Click on the Color option at the top center, to choose the color for your underline.
Right-click on the underline and choose Object Properties to set the Author and Subject for the underline.
Type your changes into the boxes next to the Author and Subject. Click OK to save the changes.
Check the box next to Locked to prevent anyone from making changes to your comment.
To delete your underline, click on the underlined text. You will see Recycle Bin icon appear right next to the Color option. Click on the icon to remove the object.