Many people find the process of downloading and installing software a little confusing, so this Tip aims to clear things up a little.
Choose the language the spellcheck dictionary uses.
Some of the software on your computer supports more than one language. How to see and control which languages are used.
When I set my Mac’s Language differently it seemed to affect window size.
Set the appropriate Language in the System Preferences or you may find your Mac constantly telling you your spelling isn’t up to much.
How to switch language keyboards on your Mac.