~jaro/balkon

ref: 2bfb88d6a4b28cc8d6c8408dbf5cdfc9106fb314 balkon/lib/Data/Text/ParagraphLayout/Plain.hs -rw-r--r-- 2.0 KiB 
Describe box edges with extensible type.

Add ancestor boxes to interface.

Deprecate the Plain interface.

Add user data to spans.

Add line numbers to laid out fragments.

Qualify Plain interface.