secure TeX and its friends
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -10,8 +10,8 @@
 ## 
 ##*****************************************************************************
 
-LATEX     = latex
-LUALATEX  = lualatex
+LATEX     = latex -no-shell-escape
+LUALATEX  = lualatex -no-shell-escape
 BIBTEX    = bibtex
 MAKEINDEX = makeindex