Index: picedit.c
==================================================================
--- picedit.c
+++ picedit.c
@@ -956,10 +956,31 @@
     screen_message(sqlite3_errmsg(userdb));
     return 0;
   }
   return 1;
 }
+
+static void rename_picture(void) {
+  sqlite3_stmt*st;
+  const char*s=screen_prompt("Old name:");
+  int i;
+  if(!s || !*s) return;
+  if(sqlite3_prepare_v2(userdb,"UPDATE `PICEDIT` SET `NAME`=REPLACE(?2||'.IMG','.IMG.IMG','.IMG') WHERE `NAME`=?1||'.IMG';",-1,&st,0)) {
+    screen_message(sqlite3_errmsg(userdb));
+    return;
+  }
+  sqlite3_bind_text(st,1,s,-1,SQLITE_TRANSIENT);
+  s=screen_prompt("New name:");
+  if(!s || !*s) {
+    sqlite3_finalize(st);
+    return;
+  }
+  sqlite3_bind_text(st,2,s,-1,SQLITE_TRANSIENT);
+  i=sqlite3_step(st);
+  sqlite3_finalize(st);
+  if(i!=SQLITE_DONE) screen_message(sqlite3_errmsg(userdb));
+}
 
 static void set_caption(void) {
   char buf[256];
   snprintf(buf,255,"Free Hero Mesh - %s - Picture",basefilename);
   SDL_WM_SetCaption(buf,buf);
@@ -989,11 +1010,11 @@
   sqlite3_bind_int(st,1,screen->h/8-1);
   sqlite3_bind_int(st,2,sc);
   SDL_LockSurface(screen);
   r.x=r.y=0; r.w=screen->w; r.h=screen->h;
   SDL_FillRect(screen,&r,0xF0);
-  draw_text(0,0,"<ESC> Save/Quit  <F1> Add  <F2> Delete  <F3> Edit",0xF0,0xFB);
+  draw_text(0,0,"<ESC> Save/Quit  <F1> Add  <F2> Delete  <F3> Edit  <F4> Rename",0xF0,0xFB);
   n=0;
   while((i=sqlite3_step(st))==SQLITE_ROW) {
     ids[n++]=sqlite3_column_int64(st,0);
     draw_text(16,8*n,sqlite3_column_text(st,1),0xF0,0xF7);
     if(8*n+8>screen->h-8) break;
@@ -1032,10 +1053,13 @@
             goto redraw;
           case SDLK_F3:
             *ids=ask_picture_id("Edit:");
             if(*ids) edit_picture(*ids);
             goto redraw;
+          case SDLK_F4:
+            rename_picture();
+            goto redraw;
         }
         break;
       case SDL_MOUSEMOTION:
         set_cursor(XC_arrow);
         break;

Index: picedit.doc
==================================================================
--- picedit.doc
+++ picedit.doc
@@ -23,10 +23,12 @@
 The F1 key adds a picture.
 
 The F2 key deletes a picture by name.
 
 The F3 key allows entering a name of a picture to edit.
+
+The F4 key renames a picture.
 
 
 === Drawing ===
 
 The following keyboard commands are available: