Update Features of WPS Office on 12/16/2019

Support more shortcuts for quick editing

It's easier to save documents, and output PDF files to the open path by default

Bug fix: Unable to scale font size of notes in WPS Presentation

Bug fix: PDF file could not be pined to top after turning pages

Bug fix: The crash about using data source of chart when username was too long

Bug fix: Unable to display cursor when switching multi-window or shortcuts in WPS Writer