Following that line of thought you should probably also recommend against **any** section of the suite.rc spanning the full width of a page as you wouldn't want graphing split halfway through an entry e.g.

this sort of thing at the end of a line:
```
foo => something => bar
```
becoming:
```
foo => some
thing => bar
```
as cylc wouldn't detect a potential problem unless strict validation was used. Similar issues would apply to command scripting, jinja2 settings etc.