Horizontal Ruler after lj-cut
Short, concise description of the idea
Automatically add an horizontal ruler after <lj-cut> ,as if you typed <lj-cut> <hr> in your entry.
Full description of the idea
The space above was enough. This isn't the right place, but I'd suggest not being mandatory to fill all fields in here when they're not necessary. Especially this one, seeing that you say it is only in case the space above isn't necessary.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation