Microsoft Word, Excel, and Powerpoint for Android and iOS updated with drawing support and SD card saving
All three apps now have a Draw tab that houses tools for drawing, highlighting, and annotating MS Office documents. The pen tool's thickness and color can be changed, while hand-drawn shapes can be converted into custom ones. Excel cells can be annotated over, while PowerPoint allows for free-form drawing over slides.
In addition, all three apps on Android have received the ability to save files on the SD card, as long as you're running Android 5.0 or later.
via MacRumors
Things that are NOT allowed: