The .capitalize sentences command capitalizes sentences following a period, exclamation point, question mark, colon, or a semicolon that is followed by one or more spaces. If the first word of the sentence is already capitalized, it remains capitalized. The .nocapitalize sentences command disables the .capitalize sentences command.
.capitalize sentences
.cs
.capitalize sentences this is the first sentence. this is the second. And, this is the third.
The output from this example is:
This is the first sentence. This is the second. And, this is the third.