dumper

A transformer with some fixed content (a template transformer can solve this, but a special one will be simpler and faster).

Here should come anything on GDOS implementation that doesn't regard big new features and doesn't regard critical bug fixes. Instead, this issue should focus on the following minor changes to the source code for which it's not worth creating a separate issue:

• source code readability improvements (indenting, formatting, etc.),
• commentary improvements (typos, English, clarity, etc.)
• s