Starting with fiferboy's advice,
I've been trying to find a Linux macro typer. And I've had some success, but Linux coders/users would be better able than me to assess them.

1. First, there's Snippits. I have a feeling this is the most developed but is problematic since it "can work from any system that supports the Ruby programming platform." Does that kill it for maemo purposes? Or is that a good thing? Here's a Lifehacker article called "Automate Repetitive Typing with Snippits.". It includes this YouTube video of Snippits in action. Snippits has some weird, extra capablities, like it can grab info from the internet and put it in with what you're typing. It can also automatically enter formatted dates, times, etc. FWIW, here's a How-To thread on ubuntuforums.

2. Next, and good since it's Python-based, is Autokey. "It listens to keyboard events on /dev/input/eventX and uses the python-xlib library to send xtest events to drive the expansions." It, too, has a YouTube video and an example abbr.ini file.

3. There are various Firefox add-ons, which would need porting to MicroB. I like the idea of an applet that can automatically enter text in any maemo program, but a MicroB browser add-on would address most needs. I need to test these still, but the obvious ones seem to be: Clippings, Fireform, and Formfiller.