diff --git a/xighlight.c b/xighlight.c
index 27bce9a..14df3ad 100644
--- a/xighlight.c
+++ b/xighlight.c
@@ -9,46 +9,83 @@
 #include <xolatile/xyntax.h>
 #include <xolatile/xyntax.c>
 
-int main (void) {
-	int    offset = 0;
-	int    word   = 0;
-	int    select = 0;
-	int    length = 0;
-	char * buffer = NULL;
+static void highlight_c (void) {
+	char * separators = ".,:;<=>+-*/%!&~^?|()[]{}'\" \t\r\n";
 
-	char * separator = ".,:;<=>+-*/%!&~^?|()[]{}'\" \t\r\n";
-
-	char * c_keywords [32] = {
+	char * keywords [32] = {
 		"register", "volatile", "auto",     "const",    "static",   "extern",   "if",       "else",
 		"do",       "while",    "for",      "continue", "switch",   "case",     "default",  "break",
 		"enum",     "union",    "struct",   "typedef",  "goto",     "void",     "return",   "sizeof",
 		"char",     "short",    "int",      "long",     "signed",   "unsigned", "float",    "double"
 	};
 
-	(void) syntax_define (1, 0, " \t\r\n",                  "",   '\0', COLOUR_WHITE, EFFECT_NORMAL);
-	(void) syntax_define (0, 0, "#",                        "\n", '\\', COLOUR_PINK,  EFFECT_BOLD);
-	(void) syntax_define (0, 0, "//",                       "\n", '\0', COLOUR_GREY,  EFFECT_BOLD);
-	(void) syntax_define (0, 0, "/*",                       "*/", '\0', COLOUR_GREY,  EFFECT_BOLD);
-	(void) syntax_define (0, 0, "'",                        "'",  '\\', COLOUR_RED,   EFFECT_NORMAL);
-	(void) syntax_define (0, 0, "\"",                       "\"", '\\', COLOUR_RED,   EFFECT_BOLD);
-	(void) syntax_define (1, 0, ".,:;<=>+-*/%!&~^?|()[]{}", "",   '\0', COLOUR_CYAN,  EFFECT_NORMAL);
+	syntax_define_separators (separators);
 
-	for (word = 0; word != 32; ++word) {
-		(void) syntax_define (0, 1, c_keywords [word], separator, '\0', COLOUR_BLUE, EFFECT_BOLD);
+	syntax_define_default (COLOUR_RED, EFFECT_NORMAL, COLOUR_CYAN, EFFECT_BOLD);
+
+	syntax_define_range ("/*", "*/", '\0', COLOUR_GREY, EFFECT_BOLD);
+	syntax_define_range ("//", "\n", '\0', COLOUR_GREY, EFFECT_BOLD);
+	syntax_define_range ("#",  "\n", '\\', COLOUR_PINK, EFFECT_NORMAL);
+	syntax_define_range ("'",  "'",  '\\', COLOUR_PINK, EFFECT_BOLD);
+
+	syntax_define_operators (".,:;<=>+*-/%!&~^?|()[]{}", COLOUR_BLUE,  EFFECT_BOLD);
+
+	syntax_define_words (keywords, 32, COLOUR_BLUE, EFFECT_NORMAL);
+}
+
+static void highlight_ada (void) {
+	char * separators = ".,:;<=>+-*/&|()\" \t\r\n";
+
+	char * keywords [73] = {
+		"abort",    "else",     "new",      "return",   "abs",      "elsif",    "not",      "reverse",
+		"abstract", "end",      "null",     "accept",   "entry",    "select",   "access",   "of",
+		"separate", "aliased",  "exit",     "or",       "some",     "all",      "others",   "subtype",
+		"and",      "for",      "out",      "array",    "function", "at",       "tagged",   "generic",
+		"package",  "task",     "begin",    "goto",     "pragma",   "body",     "private",  "then",
+		"type",     "case",     "in",       "constant", "until",    "is",       "raise",    "use",
+		"if",       "declare",  "range",    "delay",    "limited",  "record",   "when",     "delta",
+		"loop",     "rem",      "while",    "digits",   "renames",  "with",     "do",       "mod",
+		"requeue",  "xor",      "procedure",            "protected",            "interface",
+		"synchronized",         "exception",            "overriding",           "terminate"
+	};
+
+	syntax_define_separators (separators);
+
+	syntax_define_default (COLOUR_RED, EFFECT_NORMAL, COLOUR_CYAN, EFFECT_BOLD);
+
+	syntax_define_range ("--", "\n", '\0', COLOUR_GREY, EFFECT_BOLD);
+	syntax_define_range ("'",  "'",  '\0', COLOUR_PINK, EFFECT_BOLD);
+
+	syntax_define_operators (".,:;<=>+-*/&|()'", COLOUR_BLUE,  EFFECT_BOLD);
+
+	syntax_define_words (keywords, 73, COLOUR_BLUE, EFFECT_NORMAL);
+}
+
+int main (int argc, char * * argv) {
+	int    offset = 0;
+	int    select = 0;
+	int    length = 0;
+	char * buffer = NULL;
+
+	if (argc != 1) {
+		if (string_compare (argv [1], "c") != 0) {
+			highlight_c ();
+		} else if (string_compare (argv [1], "ada") != 0) {
+			highlight_ada ();
+		} else {
+			highlight_c ();
+		}
+	} else {
+		highlight_c ();
 	}
 
-	(void) syntax_define (1, 1, "_",                          separator, '\0', COLOUR_GREY,  EFFECT_BOLD);
-	(void) syntax_define (1, 1, "0123456789",                 separator, '\0', COLOUR_CYAN,  EFFECT_BOLD);
-	(void) syntax_define (1, 1, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", separator, '\0', COLOUR_PINK,  EFFECT_ITALIC);
-	(void) syntax_define (1, 1, "abcdefghijklmnopqrstuvwxyz", separator, '\0', COLOUR_WHITE, EFFECT_ITALIC);
-
 	buffer = record ();
 
 	for (offset = 0; buffer [offset] != '\0'; offset += length) {
 		select = syntax_select (& buffer [offset], & length);
 
 		if (select >= syntax_count) {
-			terminal_style (EFFECT_NORMAL, COLOUR_WHITE);
+			terminal_style (EFFECT_REVERSE, COLOUR_RED);
 		} else {
 			terminal_style (syntax_effect [select], syntax_colour [select]);
 		}