These tools help you placing text in the screen.
This feature was recently added, so it's a little rough in the edges:
Currently the only 3 fonts included are the ones that make up the whole pixly UI. Later it might support custom fonts.
You can't scale nor rotate text right now. You might want to use the free transform operation to accomplish it.
The text that is currently written will be stamped right under your finger.
Change the text that is written to something else.
Small, Normal and Narrow, are the current options for now.