diff --git a/src/libespeak-ng/readclause.c b/src/libespeak-ng/readclause.c
index 85d87c39..7dd2873f 100644
--- a/src/libespeak-ng/readclause.c
+++ b/src/libespeak-ng/readclause.c
@@ -42,6 +42,7 @@
 #include "voice.h"
 #include "synthesize.h"
 #include "translate.h"
+#include "ssml.h"
 
 #define N_XML_BUF   500
 
@@ -64,17 +65,6 @@ static int sayas_mode;
 static int sayas_start;
 static int ssml_ignore_l_angle = 0;
 
-// stack for language and voice properties
-// frame 0 is for the defaults, before any ssml tags.
-typedef struct {
-	int tag_type;
-	int voice_variant_number;
-	int voice_gender;
-	int voice_age;
-	char voice_name[40];
-	char language[20];
-} SSML_STACK;
-
 #define N_SSML_STACK  20
 static int n_ssml_stack;
 static SSML_STACK ssml_stack[N_SSML_STACK];
@@ -560,66 +550,7 @@ static int AnnouncePunctuation(Translator *tr, int c1, int *c2_ptr, char *output
 	return short_pause;
 }
 
-#define SSML_SPEAK     1
-#define SSML_VOICE     2
-#define SSML_PROSODY   3
-#define SSML_SAYAS     4
-#define SSML_MARK      5
-#define SSML_SENTENCE  6
-#define SSML_PARAGRAPH 7
-#define SSML_PHONEME   8
-#define SSML_SUB       9
-#define SSML_STYLE    10
-#define SSML_AUDIO    11
-#define SSML_EMPHASIS 12
-#define SSML_BREAK    13
-#define SSML_IGNORE_TEXT 14
-#define HTML_BREAK    15
-#define HTML_NOSPACE  16   // don't insert a space for this element, so it doesn't break a word
-#define SSML_CLOSE    0x20 // for a closing tag, OR this with the tag type
-
-// these tags have no effect if they are self-closing, eg. <voice />
-static char ignore_if_self_closing[] = { 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0 };
-
-static MNEM_TAB ssmltags[] = {
-	{ "speak",     SSML_SPEAK },
-	{ "voice",     SSML_VOICE },
-	{ "prosody",   SSML_PROSODY },
-	{ "say-as",    SSML_SAYAS },
-	{ "mark",      SSML_MARK },
-	{ "s",         SSML_SENTENCE },
-	{ "p",         SSML_PARAGRAPH },
-	{ "phoneme",   SSML_PHONEME },
-	{ "sub",       SSML_SUB },
-	{ "tts:style", SSML_STYLE },
-	{ "audio",     SSML_AUDIO },
-	{ "emphasis",  SSML_EMPHASIS },
-	{ "break",     SSML_BREAK },
-	{ "metadata",  SSML_IGNORE_TEXT },
-
-	{ "br",     HTML_BREAK },
-	{ "li",     HTML_BREAK },
-	{ "dd",     HTML_BREAK },
-	{ "img",    HTML_BREAK },
-	{ "td",     HTML_BREAK },
-	{ "h1",     SSML_PARAGRAPH },
-	{ "h2",     SSML_PARAGRAPH },
-	{ "h3",     SSML_PARAGRAPH },
-	{ "h4",     SSML_PARAGRAPH },
-	{ "hr",     SSML_PARAGRAPH },
-	{ "script", SSML_IGNORE_TEXT },
-	{ "style",  SSML_IGNORE_TEXT },
-	{ "font",   HTML_NOSPACE },
-	{ "b",      HTML_NOSPACE },
-	{ "i",      HTML_NOSPACE },
-	{ "strong", HTML_NOSPACE },
-	{ "em",     HTML_NOSPACE },
-	{ "code",   HTML_NOSPACE },
-
-	{ NULL, 0 }
-};
-
-static const char *VoiceFromStack()
+const char *VoiceFromStack()
 {
 	// Use the voice properties from the SSML stack to choose a voice, and switch
 	// to that voice if it's not the current voice
diff --git a/src/libespeak-ng/ssml.h b/src/libespeak-ng/ssml.h
new file mode 100644
index 00000000..0ab59221
--- /dev/null
+++ b/src/libespeak-ng/ssml.h
@@ -0,0 +1,76 @@
+// stack for language and voice properties
+// frame 0 is for the defaults, before any ssml tags.
+typedef struct {
+        int tag_type;
+        int voice_variant_number;
+        int voice_gender;
+        int voice_age;
+        char voice_name[40];
+        char language[20];
+} SSML_STACK;
+
+#define SSML_SPEAK     1
+#define SSML_VOICE     2
+#define SSML_PROSODY   3
+#define SSML_SAYAS     4
+#define SSML_MARK      5
+#define SSML_SENTENCE  6
+#define SSML_PARAGRAPH 7
+#define SSML_PHONEME   8
+#define SSML_SUB       9
+#define SSML_STYLE    10
+#define SSML_AUDIO    11
+#define SSML_EMPHASIS 12
+#define SSML_BREAK    13
+#define SSML_IGNORE_TEXT 14
+#define HTML_BREAK    15
+#define HTML_NOSPACE  16   // don't insert a space for this element, so it doesn't break a word
+#define SSML_CLOSE    0x20 // for a closing tag, OR this with the tag type
+
+// these tags have no effect if they are self-closing, eg. <voice />
+static char ignore_if_self_closing[] = { 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0 };
+
+static MNEM_TAB ssmltags[] = {
+	{ "speak",     SSML_SPEAK },
+	{ "voice",     SSML_VOICE },
+	{ "prosody",   SSML_PROSODY },
+	{ "say-as",    SSML_SAYAS },
+	{ "mark",      SSML_MARK },
+	{ "s",         SSML_SENTENCE },
+	{ "p",         SSML_PARAGRAPH },
+	{ "phoneme",   SSML_PHONEME },
+	{ "sub",       SSML_SUB },
+	{ "tts:style", SSML_STYLE },
+	{ "audio",     SSML_AUDIO },
+	{ "emphasis",  SSML_EMPHASIS },
+	{ "break",     SSML_BREAK },
+	{ "metadata",  SSML_IGNORE_TEXT },
+
+	{ "br",     HTML_BREAK },
+	{ "li",     HTML_BREAK },
+	{ "dd",     HTML_BREAK },
+	{ "img",    HTML_BREAK },
+	{ "td",     HTML_BREAK },
+	{ "h1",     SSML_PARAGRAPH },
+	{ "h2",     SSML_PARAGRAPH },
+	{ "h3",     SSML_PARAGRAPH },
+	{ "h4",     SSML_PARAGRAPH },
+	{ "hr",     SSML_PARAGRAPH },
+	{ "script", SSML_IGNORE_TEXT },
+	{ "style",  SSML_IGNORE_TEXT },
+	{ "font",   HTML_NOSPACE },
+	{ "b",      HTML_NOSPACE },
+	{ "i",      HTML_NOSPACE },
+	{ "strong", HTML_NOSPACE },
+	{ "em",     HTML_NOSPACE },
+	{ "code",   HTML_NOSPACE },
+
+	{ NULL, 0 }
+};
+
+int attrcmp(const wchar_t *string1, const char *string2);
+int attrlookup(const wchar_t *string1, const MNEM_TAB *mtab);
+int attrnumber(const wchar_t *pw, int default_value, int type);
+int attrcopy_utf8(char *buf, const wchar_t *pw, int len);
+int GetVoiceAttributes(wchar_t *pw, int tag_type, SSML_STACK *ssml_sp, SSML_STACK *ssml_stack, int n_ssml_stack, char current_voice_id[]);
+