One common typo that we usually make is entering the as “teh”. Keynote has a feature that allows users to add text substitution that automatically handles these kinds of typos and other text substitution.
Click the Keynote menu and select Preferences from the menu list then navigate to Auto-Correction Preferences.
You can enable text substitution by marking the check box with label as Symbol and text substitution. Now if you want to add a new substation then click the + sign at the bottom and the text that you to replace and the replace with text. For example if you want to replace “da” with “Digital Answers” then type entry as shown below. Also make sure mark the check box for the new added entry.
Now when you type the text “da” in your keynote presentation, it will be automatically replaced with “Digital Answers”