Create Freeform Lines with Acrobat CS5 Pencil Tool
You can create freeform lines in Adobe Acrobat Creative Suite 5 documents by using the Pencil Tool in the Comment & Markup toolbar, which you can access by clicking the Comment option in the Tasks toolbar. You can then choose Show the Comment & Markup Tools.
You can also access the Comment & Markup toolbar by choosing View→ Toolbars→Comment & Markup.
Lines can be useful when you’re trying to attract attention to a specific portion of a page. Just follow these steps:
Select the Pencil tool from the Comment & Markup toolbar.
Click and drag to draw on your document.
Edit the color and thickness of lines created with the Pencil tool by right-clicking (Windows) or Control-clicking (Mac) the line and choosing Properties from the contextual menu.
Alternatively, you can press Ctrl+E (Windows) or Command+E (Mac) to access the Properties toolbar.
Make your choices and click OK.
By right-clicking (Windows) or Control-clicking (Mac) the Pencil tool, you can choose the Pencil Eraser tool. Use the Pencil Eraser tool to remove portions of lines that had previously been created with the Pencil tool.