need help setting an encrypted root FS on dual boot system

Hi, I've a laptop with Ubuntu 14.04/OpenBSD-current dual boot. I'm trying to convert the OpenBSD FS to softraid(4) encryption with passphrase. I'm booting from an USB drive to access the disk to shuffle data on it. After backing up my data, changing the OpenBSD disklabel in sd0 to have one

native UTF-8 and ISO-8859-1 *input* support for mandoc(1)

Hi, you probably know that mandoc(1) has been providing a -Tutf8 *output* mode for more than three years now. To *input* non-ASCII characters, however, encoding them as \[u] roff(7) esacape sequences, also documented in mandoc_char(7), is required. In ports land, many manual pages contain