The stuff in block caps there is the dialogue. The comic is going to be lettered in upper case, so I write the dialogue etc in upper case, which gives me an idea of how it’s going to look when it’s lettered. Which is important. Some text effects in sentence case simply don’t translate to upper case. I indent it for ease of reading and also for the same reason as above – I can kind of squint at it and guess roughly how the balloons will look. Also, I have a rule of thumb – if one of those pieces of dialogue had run to a third line, then it’s getting a bit long for a single balloon. If it runs to a fourth line, then it’s going to need cutting, or be the only balloon in the panel unless it’s a really big panel.