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diff --git a/source/luametatex/source/tex/texalign.h b/source/luametatex/source/tex/texalign.h
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+++ b/source/luametatex/source/tex/texalign.h
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+/*
+ See license.txt in the root of this project.
+*/
+
+# ifndef LMT_ALIGN_H
+# define LMT_ALIGN_H
+
+/* todo : rename */
+
+extern void tex_initialize_alignments (void);
+extern void tex_cleanup_alignments (void);
+
+extern void tex_insert_alignment_template (void);
+extern void tex_run_alignment_initialize (void);
+extern void tex_run_alignment_end_template (void);
+extern void tex_run_alignment_error (void);
+
+extern void tex_finish_alignment_group (void);
+extern void tex_finish_no_alignment_group (void);
+
+extern void tex_alignment_interwoven_error (int n);
+extern halfword tex_alignment_hold_token_head (void);
+
+# endif