I always like to use is a simple software to replace those large brand-name software, such as the mac can browse pdf file directly, then I will not go on the loaded Adobe Acrobat, in the mac on a pdf file browser is very convenient, but only a single visit may not have been a bit too much functionality, there is a pdf if I need to correct and modify how to do.

Skim our debut, he not only highlighted the paragraph, but also marked so that only a specific number of practical uses, such as yourself knows that.
Apple Mac OS X operating system built-in software that allows you Preview.app to the PDF document to add a general note, but if you want access to more powerful features of the Notes, such as text or highlight to select the Skim free software can help you to complete this work.