To convert the words of a sentence to capitalized form, put them inside a [Capitalize] context. Only the first letter of each word (any letter following a space) is capitalized. If the remaining letters in the word are uppercase, they will be changed to lowercase. If the word begins with a numeral, the numeral is left unchanged, and the rest of the letters will become lowercase. No attempt is made to be grammatically correct -- articles such as "a, an, of" are capitalized just like any other word.
Example (normally you would put the following text into a .tpl file on your server and use a web browser to link to it):
In the examples above, the displayed text will be
Some Text That Contains Upper- And Lower Case Letters Hi There This Is My 1st Time At Bat A Of On At The In Or
You can use this context to display user-entered text (such as first and last names) so they look more consistent, regardless of how the user typed them.