+extern const char *tags[]; /* all tags */
+extern char stext[256]; /* status text */
+extern int screen, sx, sy, sw, sh; /* screen geometry */
+extern int wax, way, wah, waw; /* windowarea geometry */
+extern unsigned int bh, blw, bpos; /* bar height, bar layout label width, bar position */
+extern unsigned int ntags, numlockmask; /* number of tags, numlock mask */
+extern void (*handler[LASTEvent])(XEvent *); /* event handler */
+extern Atom wmatom[WMLast], netatom[NetLast];
+extern Bool selscreen, *seltags; /* seltags is array of Bool */
+extern Client *clients, *sel, *stack; /* global client list and stack */
+extern Cursor cursor[CurLast];
+extern DC dc; /* global draw context */
+extern Display *dpy;
+extern Window root, barwin;