[TxMt] Fwd: Dialog2 tool_tip font-size & max-width

[Thomas Aylott]

Ahoy.
Seems the default tool_tip with implied :format => :text is using a
font that is way huge and sizes wider than the screen with long
content.

For my needs I'm likely just going to use :format => :html with a
custom style tag. But ideally I could just use the default format.

What rules do normal system tooltips use to decide when to force wrap
to a new line?