[Geany] tag completion

[Kete]

Hello, I can't find instructions on how to add a tag to be automatically 
completed when I type the first part. For example, when I type <p>, the closing 
tag, </p>, automatically shows up after my blinking insertion bar. I'd like to 
add one of these for the standard PHP opening delimeter, <?php. I'd like the 
closing delimeter, ?>, to pop up right after I type that. Is there a way to do 
this? Pointing me to instructions I overlooked is fine.