I am a highlight! smiles the prompt
Relaying letters to the comp

I am a highlight! shouts the shade
The text shines bright - see what I've made

I am a highlight! cries the disk
I read and turn - your data's risk

I am a highlight! sneers the port
'Cause without me there's no support

I am a highlight! grins the font
When typing words that you don't want

Am I a highlight? asks the fool
Oh no, I'm just a minor tool.