Android: Move your installed App from the tablet to the SD Card

+ Tap on Home key
+ Go to home screen bottom bar, tap on action overflow icon
+ Select System settings
+ On the left menu, select Apps
+ Select any app, for example, Kingsoft Office
+ Tap on "Move to SD card" button

LibreOffice Writer: How to change the text case from uppercase to capitalize every word?

+ Menu > Format > Change Case

+ Select one of the following:
    + Sentence case
    + lowercase
    + UPPERCASE
    + Capitalize Every Word
    + tOGGLE cASE

Android: Free Ebook Reader: Mantano Reader Lite: How to highlight a word and to clear a highlight? And also, some important tips...

Q: How to highlight a word?
S: Long press and release on a word and then select the text highlight thumbnail.

Q: How to clear a highlighted word?
S: Tap on the menu button, select Navigation icon, select Highlights tab at the rightmost side of the screen, tick the word box that you want to clear and then select dustbin icon.

More Tips:
+ Long press and release on a word and select ColorDict icon to search for the meaning of the selected word
+ Three ways to turn pages: swipe, tap on the left/right sides of the screen or use the volume keys
+ Swipe up/down to increase/decrease the font size for EPUB or reflowed PDF file

Firefox: Check to see if your plugins are up to date

+ Menu > Tools > Add-ons > Click on "Check to see if your plugins are up to date" link (www.mozilla.org/en-US/plugincheck/) at the top position