diff --git a/ncurses/base/lib_slk.c b/ncurses/base/lib_slk.c
new file mode 100644
index 0000000..662f7e4
--- /dev/null
+++ b/ncurses/base/lib_slk.c
@@ -0,0 +1,191 @@
+/****************************************************************************
+ * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Authors:                                                                *
+ *          Gerhard Fuernkranz                      1993 (original)         *
+ *          Zeyd M. Ben-Halim                       1992,1995 (sic)         *
+ *          Eric S. Raymond                                                 *
+ *          Juergen Pfeifer                         1996-on                 *
+ *          Thomas E. Dickey                                                *
+ ****************************************************************************/
+
+/*
+ *	lib_slk.c
+ *	Soft key routines.
+ */
+
+#include <curses.priv.h>
+
+#include <ctype.h>
+#include <term.h>		/* num_labels, label_*, plab_norm */
+
+MODULE_ID("$Id: lib_slk.c,v 1.35 2008/09/27 14:07:33 juergen Exp $")
+
+/*
+ * Free any memory related to soft labels, return an error.
+ */
+static int
+slk_failed(void)
+{
+    if (SP->_slk) {
+	FreeIfNeeded(SP->_slk->ent);
+	free(SP->_slk);
+	SP->_slk = (SLK *) 0;
+    }
+    return ERR;
+}
+
+/*
+ * Initialize soft labels.
+ * Called from newterm()
+ */
+NCURSES_EXPORT(int)
+_nc_slk_initialize(WINDOW *stwin, int cols)
+{
+    int i, x;
+    int res = OK;
+    unsigned max_length;
+
+    T((T_CALLED("_nc_slk_initialize()")));
+
+    if (SP->_slk) {		/* we did this already, so simply return */
+	returnCode(OK);
+    } else if ((SP->_slk = typeCalloc(SLK, 1)) == 0)
+	returnCode(ERR);
+
+    SP->_slk->ent = NULL;
+
+    /*
+     * If we use colors, vidputs() will suppress video attributes that conflict
+     * with colors.  In that case, we're still guaranteed that "reverse" would
+     * work.
+     */
+    if ((no_color_video & 1) == 0)
+	SetAttr(SP->_slk->attr, A_STANDOUT);
+    else
+	SetAttr(SP->_slk->attr, A_REVERSE);
+
+    SP->_slk->maxlab = ((num_labels > 0)
+			? num_labels
+			: MAX_SKEY(_nc_globals.slk_format));
+    SP->_slk->maxlen = ((num_labels > 0)
+			? label_width * label_height
+			: MAX_SKEY_LEN(_nc_globals.slk_format));
+    SP->_slk->labcnt = ((SP->_slk->maxlab < MAX_SKEY(_nc_globals.slk_format))
+			? MAX_SKEY(_nc_globals.slk_format)
+			: SP->_slk->maxlab);
+
+    if (SP->_slk->maxlen <= 0
+	|| SP->_slk->labcnt <= 0
+	|| (SP->_slk->ent = typeCalloc(slk_ent,
+				       (unsigned) SP->_slk->labcnt)) == NULL)
+	returnCode(slk_failed());
+
+    max_length = SP->_slk->maxlen;
+    for (i = 0; i < SP->_slk->labcnt; i++) {
+	size_t used = max_length + 1;
+
+	if ((SP->_slk->ent[i].ent_text = (char *) _nc_doalloc(0, used)) == 0)
+	    returnCode(slk_failed());
+	memset(SP->_slk->ent[i].ent_text, 0, used);
+
+	if ((SP->_slk->ent[i].form_text = (char *) _nc_doalloc(0, used)) == 0)
+	    returnCode(slk_failed());
+	memset(SP->_slk->ent[i].form_text, 0, used);
+
+	memset(SP->_slk->ent[i].form_text, ' ', max_length);
+	SP->_slk->ent[i].visible = (char) (i < SP->_slk->maxlab);
+    }
+    if (_nc_globals.slk_format >= 3) {	/* PC style */
+	int gap = (cols - 3 * (3 + 4 * max_length)) / 2;
+
+	if (gap < 1)
+	    gap = 1;
+
+	for (i = x = 0; i < SP->_slk->maxlab; i++) {
+	    SP->_slk->ent[i].ent_x = x;
+	    x += max_length;
+	    x += (i == 3 || i == 7) ? gap : 1;
+	}
+    } else {
+	if (_nc_globals.slk_format == 2) {	/* 4-4 */
+	    int gap = cols - (SP->_slk->maxlab * max_length) - 6;
+
+	    if (gap < 1)
+		gap = 1;
+	    for (i = x = 0; i < SP->_slk->maxlab; i++) {
+		SP->_slk->ent[i].ent_x = x;
+		x += max_length;
+		x += (i == 3) ? gap : 1;
+	    }
+	} else {
+	    if (_nc_globals.slk_format == 1) {	/* 1 -> 3-2-3 */
+		int gap = (cols - (SP->_slk->maxlab * max_length) - 5)
+		/ 2;
+
+		if (gap < 1)
+		    gap = 1;
+		for (i = x = 0; i < SP->_slk->maxlab; i++) {
+		    SP->_slk->ent[i].ent_x = x;
+		    x += max_length;
+		    x += (i == 2 || i == 4) ? gap : 1;
+		}
+	    } else
+		returnCode(slk_failed());
+	}
+    }
+    SP->_slk->dirty = TRUE;
+    if ((SP->_slk->win = stwin) == NULL) {
+	returnCode(slk_failed());
+    }
+
+    /* We now reset the format so that the next newterm has again
+     * per default no SLK keys and may call slk_init again to
+     * define a new layout. (juergen 03-Mar-1999)
+     */
+    SP->slk_format = _nc_globals.slk_format;
+    _nc_globals.slk_format = 0;
+    returnCode(res);
+}
+
+/*
+ * Restore the soft labels on the screen.
+ */
+NCURSES_EXPORT(int)
+slk_restore(void)
+{
+    T((T_CALLED("slk_restore()")));
+
+    if (SP->_slk == NULL)
+	return (ERR);
+    SP->_slk->hidden = FALSE;
+    SP->_slk->dirty = TRUE;
+
+    returnCode(slk_refresh());
+}