1 files changed, 15 insertions, 0 deletions
diff --git a/tex/context/base/core-box.tex b/tex/context/base/core-box.tex
index 9ee21e7a6..f9d30c43e 100644
--- a/tex/context/base/core-box.tex
+++ b/tex/context/base/core-box.tex
@@ -718,6 +718,21 @@
 \setvalue{\??ab\??ab bl}{\bottomleftbox}
 \setvalue{\??ab\??ab tr}{\toprightbox}
 \setvalue{\??ab\??ab br}{\bottomrightbox}
+
+\setvalue{\??ab\??ab  m}{\middlebox}
+
+% The next ones were desparately needed by Vit Zyka (see
+% \type {supp-box} for definitions).
+
+\setvalue{\??ab\??ab  g}{\baselinemiddlebox}
+\setvalue{\??ab\??ab gl}{\baselineleftbox}
+\setvalue{\??ab\??ab gc}{\baselinemiddlebox}
+\setvalue{\??ab\??ab gr}{\baselinerightbox}
+
+\setvalue{\??ab\??ab \v!regel         }{\baselinemiddlebox} % \v!grid is taken
+\setvalue{\??ab\??ab \v!regel\v!links }{\baselineleftbox}
+\setvalue{\??ab\??ab \v!regel\v!midden}{\baselinemiddlebox}
+\setvalue{\??ab\??ab \v!regel\v!rechts}{\baselinerightbox}
 
 \def\offsetbox
   {\dodoubleempty\dooffsetbox[]}