I wouldn't want to edit core files as I'm not sure to avoid damages on my forum...
So maybe the custom forum block is the best way. Anyway, I would like very much to truncate too long messages, as some members send veeeery long posts (as there is a roleplay part on our forum). If this is possible to keep the truncation and close orphan tags, this would be the best for our use !
Again, many thanks, Mark