diff --git a/bind.c b/bind.c
index e5c9d73..856ae9d 100644
--- a/bind.c
+++ b/bind.c
@@ -89,7 +89,7 @@ int deskey(int f, int n)
 int bindtokey(int f, int n)
 {
 	register unsigned int c;	/* command key to bind */
-	register int (*kfunc) ();	/* ptr to the requested function to bind to */
+	register fn_t kfunc;	/* ptr to the requested function to bind to */
 	register KEYTAB *ktp;	/* pointer into the command table */
 	register int found;	/* matched command flag */
 	char outseq[80];	/* output buffer for keystroke sequence */
@@ -706,7 +706,6 @@ unsigned int stock(char *keyname)
 char *transbind(char *skey)
 {
 	char *bindname;
-	unsigned int stock();
 
 	bindname = getfname(getbind(stock(skey)));
 	if (bindname == NULL)
diff --git a/crypt.c b/crypt.c
index 96906be..4186651 100644
--- a/crypt.c
+++ b/crypt.c
@@ -12,7 +12,7 @@
 
 #if	CRYPT
 
-static int mod95();
+static int mod95(int);
 
 /*
  * reset encryption key of current buffer
diff --git a/display.c b/display.c
index e364a8f..ef8bdff 100644
--- a/display.c
+++ b/display.c
@@ -1512,7 +1512,6 @@ void getscreensize(int *widthp, int *heightp)
 void sizesignal(int signr)
 {
 	int w, h;
-	extern int errno;
 	int old_errno = errno;
 
 	getscreensize(&w, &h);
diff --git a/edef.h b/edef.h
index 292280c..780942f 100644
--- a/edef.h
+++ b/edef.h
@@ -17,16 +17,6 @@ typedef int (*fn_t)(int, int);
 
 struct VIDEO;
 
-char *getval();
-char *gtenv();
-char *gtfun();
-char *gtusr();
-char *itoa();
-char *ltos();
-char *mklower();
-char *mkupper();
-char *token();
-
 /* initialized global external declarations */
 
 extern int fillcol;		/* Fill column                  */
@@ -121,7 +111,7 @@ extern BUFFER *blistp;		/* Buffer for C-X C-B           */
 
 extern BUFFER *bfind(char *bname, int cflag, int bflag); /* Lookup a buffer by name      */
 extern window_t *wpopup();	/* Pop up window creation       */
-extern LINE *lalloc();		/* Allocate a line              */
+extern LINE *lalloc(int);	/* Allocate a line              */
 extern char sres[NBUFN];	/* current screen resolution    */
 extern char pat[];		/* Search pattern               */
 extern char tap[];		/* Reversed pattern array.      */
@@ -149,7 +139,4 @@ extern char outline[];		/* global string to hold debug line text */
 #endif
 
 /* terminal table defined only in TERM.C */
-
-#ifndef	termdef
 extern TERM term;		/* Terminal information.        */
-#endif
diff --git a/estruct.h b/estruct.h
index ec9bf07..ca9a800 100644
--- a/estruct.h
+++ b/estruct.h
@@ -601,7 +601,7 @@ typedef struct {
 
 typedef struct {
 	short k_code;		/* Key code                     */
-	int (*k_fp) ();		/* Routine to handle it         */
+	int (*k_fp)(int, int);	/* Routine to handle it         */
 } KEYTAB;
 
 /*	structure for the name binding table		*/
diff --git a/eval.c b/eval.c
index dbc20b5..23244e9 100644
--- a/eval.c
+++ b/eval.c
@@ -34,8 +34,6 @@ char *gtfun(char *fname)
 	char arg2[NSTRING];	/* value of second argument */
 	char arg3[NSTRING];	/* value of third argument */
 	static char result[2 * NSTRING];	/* string result */
-	char *flook();		/* look file up on path */
-	char *xlat();		/* translate a char string */
 
 	/* look the function up in the function table */
 	fname[3] = 0;		/* only first 3 chars significant */
diff --git a/exec.c b/exec.c
index 6200725..fa1ff76 100644
--- a/exec.c
+++ b/exec.c
@@ -20,8 +20,7 @@
  */
 int namedcmd(int f, int n)
 {
-	register int (*kfunc) ();	/* ptr to the requexted function to bind to */
-	int (*getname()) ();
+	register fn_t kfunc;	/* ptr to the requexted function to bind to */
 
 	/* prompt the user to type a named command */
 	mlwrite(": ");
@@ -34,7 +33,7 @@ int namedcmd(int f, int n)
 	}
 
 	/* and then execute the command */
-	return ((*kfunc) (f, n));
+	return kfunc(f, n);
 }
 
 /*
@@ -74,12 +73,11 @@ int docmd(char *cline)
 {
 	register int f;		/* default argument flag */
 	register int n;		/* numeric repeat value */
-	int (*fnc) ();		/* function to execute */
+	fn_t fnc;		/* function to execute */
 	int status;		/* return status of function */
 	int oldcle;		/* old contents of clexec flag */
 	char *oldestr;		/* original exec string */
 	char tkn[NSTRING];	/* next token off of command line */
-	int (*fncmatch()) ();
 
 	/* if we are scanning and not executing..go back here */
 	if (execlevel)
diff --git a/globals.c b/globals.c
index bb2444a..9c154ec 100644
--- a/globals.c
+++ b/globals.c
@@ -105,11 +105,7 @@ window_t *wheadp;		/* Head of list of windows      */
 BUFFER *bheadp;			/* Head of list of buffers      */
 BUFFER *blistp;			/* Buffer for C-X C-B           */
 
-BUFFER *bfind(char *bname, int cflag, int bflag);	/* Lookup a buffer by name      */
-window_t *wpopup();		/* Pop up window creation       */
-LINE *lalloc();			/* Allocate a line              */
 char sres[NBUFN];		/* current screen resolution    */
-
 char pat[NPAT];			/* Search pattern               */
 char tap[NPAT];			/* Reversed pattern array.      */
 char rpat[NPAT];		/* replacement pattern          */
diff --git a/input.c b/input.c
index 656ebe7..4a57bf4 100644
--- a/input.c
+++ b/input.c
@@ -112,7 +112,6 @@ fn_t getname(void)
 	register NBIND *cffp;	/* current ptr to entry in name binding table */
 	register NBIND *lffp;	/* last ptr to entry in name binding table */
 	char buf[NSTRING];	/* buffer to hold tentative command name */
-	int (*fncmatch()) ();
 
 	/* starting at the beginning of the string buffer */
 	cpos = 0;
diff --git a/lock.c b/lock.c
index 31a5e92..117bcd8 100644
--- a/lock.c
+++ b/lock.c
@@ -27,7 +27,6 @@ int lockchk(char *fname)
 {
 	register int i;		/* loop indexes */
 	register int status;	/* return status */
-	char *undolock();
 
 	/* check to see if that file is already locked here */
 	if (numlocks > 0)
@@ -97,7 +96,6 @@ int lock(char *fname)
 	register char *locker;	/* lock error message */
 	register int status;	/* return status */
 	char msg[NSTRING];	/* message string */
-	char *dolock();
 
 	/* attempt to lock the file */
 	locker = dolock(fname);
@@ -131,7 +129,6 @@ int lock(char *fname)
 int unlock(char *fname)
 {
 	register char *locker;	/* undolock return string */
-	char *undolock();
 
 	/* unclock and return */
 	locker = undolock(fname);
diff --git a/main.c b/main.c
index 0598763..685a1db 100644
--- a/main.c
+++ b/main.c
@@ -82,9 +82,9 @@ extern unsigned _stklen = 32766;
 
 #if	UNIX
 #include <signal.h>
-static void emergencyexit();
+static void emergencyexit(int);
 #ifdef SIGWINCH
-extern void sizesignal();
+extern void sizesignal(int);
 #endif
 #endif
 
diff --git a/tcap.c b/tcap.c
index 1345147..318cdbd 100644
--- a/tcap.c
+++ b/tcap.c
@@ -109,7 +109,6 @@ TERM term = {
 
 static void tcapopen(void)
 {
-	char *getenv();
 	char *t, *p;
 	char tcbuf[1024];
 	char *tv_stype;