Updated runtime files and translations.
diff --git a/runtime/syntax/sisu.vim b/runtime/syntax/sisu.vim
index 83d2a17..264aae0 100644
--- a/runtime/syntax/sisu.vim
+++ b/runtime/syntax/sisu.vim
@@ -1,7 +1,7 @@
" SiSU Vim syntax file
" SiSU Maintainer: Ralph Amissah <ralph.amissah@gmail.com>
" SiSU Markup: SiSU (sisu-5.6.7)
-" Last Change: 2014-09-14
+" Last Change: 2017 Jun 22
" URL: <http://git.sisudoc.org/gitweb/?p=code/sisu.git;a=blob;f=data/sisu/conf/editor-syntax-etc/vim/syntax/sisu.vim;hb=HEAD>
" <http://git.sisudoc.org/gitweb/?p=code/sisu.git;a=blob_plain;f=data/sisu/conf/editor-syntax-etc/vim/syntax/sisu.vim;hb=HEAD>
"(originally looked at Ruby Vim by Mirko Nasato)
@@ -102,7 +102,7 @@
syn region sisu_content_alt contains=sisu_strikeout,sisu_number,sisu_bold,sisu_control,sisu_identifier,sisu_error matchgroup=sisu_contain start="^```\s\+table" end="^```\(\s\|$\)"
syn region sisu_content_alt contains=sisu_strikeout,sisu_number,sisu_bold,sisu_control,sisu_identifier,sisu_error matchgroup=sisu_contain start="^{\(t\|table\)\(\~h\)\?\(\sc[0-9]\+;\)\?[0-9; ]*}" end="\n$"
" block, group, poem, alt
-syn region sisu_content_alt contains=sisu_mark_endnote,sisu_content_endnote,sisu_link,sisu_mark,sisu_strikeout,sisu_number,sisu_control,sisu_identifier,sisu_error matchgroup=sisu_contain start="^\(block\|group\|poem\|alt\){" end="^}\1"
+syn region sisu_content_alt contains=sisu_mark_endnote,sisu_content_endnote,sisu_link,sisu_mark,sisu_strikeout,sisu_number,sisu_control,sisu_identifier,sisu_error matchgroup=sisu_contain start="^\z(block\|group\|poem\|alt\){" end="^}\z1"
syn region sisu_content_alt contains=sisu_mark_endnote,sisu_content_endnote,sisu_link,sisu_mark,sisu_strikeout,sisu_number,sisu_control,sisu_identifier,sisu_error matchgroup=sisu_contain start="^```\s\+\(block\|group\|poem\|alt\)" end="^```\(\s\|$\)"
" box
syn region sisu_content_alt contains=sisu_mark_endnote,sisu_content_endnote,sisu_link,sisu_mark,sisu_strikeout,sisu_number,sisu_control,sisu_identifier,sisu_error matchgroup=sisu_contain start="^box\(\.[a-z]\+\)\?{" end="^}box"