diff --git a/xource.c b/xource.c
index 18fad23..c736e95 100644
--- a/xource.c
+++ b/xource.c
@@ -10,54 +10,18 @@ It is distributed in the hope that it will be useful or harmful, it really depen
 #include <xolatile/xyntax.c>
 #include <xolatile/xurses.c>
 
+enum {
+	MODE_NONE,          MODE_INSERT,        MODE_COMMAND,
+	MODE_COUNT
+};
+
 static int cursor   = 0;
 static int cursor_x = 0;
 static int cursor_y = 0;
 
-static void render_status_bar (int colour) {
-	char status_bar [] = "     Xource : C = Xolatile's text editor";
+static int mode_active = MODE_INSERT;
 
-	int offset;
-
-	curses_render_string (status_bar, colour, EFFECT_REVERSE, 0, 0);
-
-	for (offset = string_length (status_bar); offset != curses_screen_width; ++offset) {
-		curses_render_string (" ", colour, EFFECT_REVERSE, offset, 0);
-	}
-
-	for (offset = 1; offset != curses_screen_height; ++offset) {
-		curses_render_string (string_realign (number_to_string (offset), 4, ' '), colour, EFFECT_REVERSE, 0, offset);
-	}
-}
-
-static void render_source_code (void) {
-	int offset, select, length;
-
-	cursor_x = curses_realign_x = 5;
-	cursor_y = curses_realign_y = 1;
-
-	for (offset = 0; file_list_data [file_list_active] [offset] != '\0'; offset += length) {
-		if (cursor_y > curses_screen_height - 2) {
-			break;
-		}
-
-		select = syntax_select (& file_list_data [file_list_active] [offset], & length);
-
-		if (select >= syntax_count) {
-			curses_render_string_point (& file_list_data [file_list_active] [offset], length, COLOUR_WHITE, EFFECT_NORMAL, & cursor_x, & cursor_y);
-		} else {
-			curses_render_string_point (& file_list_data [file_list_active] [offset], length, syntax_colour [select], syntax_effect [select], & cursor_x, & cursor_y);
-		}
-	}
-
-	if (cursor_y < curses_screen_height) {
-		for (offset = ++cursor_y; offset != curses_screen_height; ++offset) {
-			curses_render_string ("   ~", COLOUR_WHITE, EFFECT_REVERSE, 0, offset);
-		}
-	}
-}
-
-static void append_character (char character) {
+static void append_character (void) {
 	int offset = 0;
 
 	++file_list_size [file_list_active];
@@ -68,7 +32,7 @@ static void append_character (char character) {
 		file_list_data [file_list_active] [offset] = file_list_data [file_list_active] [offset - 1];
 	}
 
-	file_list_data [file_list_active] [cursor] = character;
+	file_list_data [file_list_active] [cursor] = curses_character;
 
 	++cursor;
 }
@@ -99,6 +63,83 @@ static void cursor_limits (void) {
 	}
 }
 
+static void mode_none (void) {
+	return;
+}
+
+static void mode_insert (void) {
+	int signal;
+
+	for (signal = SIGNAL_A; signal != SIGNAL_9; ++signal) {
+		curses_bind (signal,                append_character);
+		curses_bind (signal | SIGNAL_SHIFT, append_character);
+	}
+}
+
+static void mode_command (void) {
+	return;
+}
+
+static void mode_switch (int mode) {
+	curses_action    = deallocate (curses_action);
+	curses_activator = deallocate (curses_activator);
+
+	curses_action_count = 0;
+
+	switch (mode) {
+		case MODE_INSERT:  mode_insert  (); break;
+		case MODE_COMMAND: mode_command (); break;
+		default:           mode_none    (); break;
+	}
+
+	curses_bind (SIGNAL_ESCAPE, curses_exit);
+
+	mode_active = mode;
+}
+
+static void render_status_bar (void) {
+	char status_bar [] = "     Xource : C = Xolatile's text editor";
+
+	int offset;
+
+	curses_render_string (status_bar, mode_active, EFFECT_REVERSE, 0, 0);
+
+	for (offset = string_length (status_bar); offset != curses_screen_width; ++offset) {
+		curses_render_string (" ", mode_active, EFFECT_REVERSE, offset, 0);
+	}
+
+	for (offset = 1; offset != curses_screen_height; ++offset) {
+		curses_render_string (string_realign (number_to_string (offset), 4, ' '), mode_active, EFFECT_REVERSE, 0, offset);
+	}
+}
+
+static void render_source_code (void) {
+	int offset, select, length;
+
+	cursor_x = curses_realign_x = 5;
+	cursor_y = curses_realign_y = 1;
+
+	for (offset = 0; file_list_data [file_list_active] [offset] != '\0'; offset += length) {
+		if (cursor_y > curses_screen_height - 2) {
+			break;
+		}
+
+		select = syntax_select (& file_list_data [file_list_active] [offset], & length);
+
+		if (select >= syntax_count) {
+			curses_render_string_point (& file_list_data [file_list_active] [offset], length, COLOUR_WHITE, EFFECT_NORMAL, & cursor_x, & cursor_y);
+		} else {
+			curses_render_string_point (& file_list_data [file_list_active] [offset], length, syntax_colour [select], syntax_effect [select], & cursor_x, & cursor_y);
+		}
+	}
+
+	if (cursor_y < curses_screen_height) {
+		for (offset = ++cursor_y; offset != curses_screen_height; ++offset) {
+			curses_render_string ("   ~", COLOUR_WHITE, EFFECT_REVERSE, 0, offset);
+		}
+	}
+}
+
 int main (int argc, char * * argv) {
 	char * separators = ".,:;<=>+-*/%!&~^?|()[]{}'\" \t\r\n";
 
@@ -131,13 +172,12 @@ int main (int argc, char * * argv) {
 
 	curses_configure ();
 
-	curses_bind (SIGNAL_Q,                curses_exit);
-	curses_bind (SIGNAL_W | SIGNAL_SHIFT, curses_exit);
+	mode_switch (MODE_INSERT);
 
 	do {
 		curses_render_background (' ', COLOUR_WHITE, EFFECT_NORMAL);
 
-		render_status_bar  (COLOUR_WHITE);
+		render_status_bar  ();
 		render_source_code ();
 
 		cursor_x = 8;
@@ -150,7 +190,7 @@ int main (int argc, char * * argv) {
 		if (curses_signal == ('Q' & 0X1F)) {
 			curses_active = 0;
 		} else if (curses_signal == '\r') {
-			append_character ('\n');
+			append_character ();
 		} else if (curses_signal == ('S' & 0X1F)) {
 			file_list_export (file_list_name [file_list_active]);
 		} else if (curses_signal == (char) 127) {
@@ -185,7 +225,7 @@ int main (int argc, char * * argv) {
 				cursor_limits ();
 			}
 		} else if ((curses_signal >= ' ') && (curses_signal <= '~')) {
-			append_character (curses_signal);
+			append_character ();
 			cursor_limits ();
 		} else {
 			continue;