Its stylus support is discussed at great length above, but the feeling it provides of using a natural pen works very well together with the ability to annotate a PDF just about any way using it. One of the biggest draws to Drawboard's PDF offering is that it is fantastic for annotation. Everything noted down, for good or for ill This is not a large issue but it is a possibility to keep in mind. Previously, this has happened temporarily as a result of operating system updates, before Drawboard itself was updated.
Although no particular feature in the software itself triggers it, Drawboard PDF can occasionally work slowly or even crash entirely.
There are some blemishes with this process, though. And although the software is designed to annotate existing PDFs – blueprints, documents, et al – its also like other free PDF tools online that can be used to create PDFs, type them up, insert images, add or delete pages, and most other basic function you'd find in, say, Adobe Acrobat.