packers/unpackers for visual novel archive and script formats

AdvHD		AdvHD
		arcpack: pack .arc files
		ahdprc2: decode/encode script files from interstellar focus
BGI		bgi/ethornell
		script decode/encode
CatSystem2	catsystem2
		cat2pack: pack .int files (unencrypted)
DO		d.o.
		pack archive file
KiriKiri	KiriKiri
		xp3-extract: decrypt several .xp3 formats, including cxcrypt
MUSICA		Musica
		mashirowrap: check if lines in script are long and need linebreak
		spaceconv: convert 0x20 spaces in script to 0x81 0x40 spaces
Pajamas		Pajamas Adventure System
		nanaextr: extract/insert script files
Softpal		Softpal ADV System
		uniextr: extract/insert script files
		unipack: pack .pac files
		flywrap: check if lines in script are long and need linebreak
Willadv		adv/will v1
		pack .arc files (filename 12 chars, 1 byte per char)