mothra: add keyboard command a to collapse/expand navigation boxes

sys/man/1/mothra

@@ -93,7 +93,10 @@ Ask for confirmation and quit.
 .PD
 .PP
 The typed commands are:
-.TF save\ back
+.TF typed\ commands
+.TP
+.B a
+Collapse or expand the navigation boxes at the top of the browser window.
 .TP
 .BI g " url
 Get the page with the given URL.

sys/src/cmd/mothra/mothra.c

@@ -524,6 +524,11 @@ void docmd(Panel *p, char *s){
 	default:
 		message("Unknown command %s, type h for help", s);
 		break;
+	case 'a':
+		s=arg(s);
+		if(*s == '\0' && selection)
+			hit3(3, 0);
+		break;
 	case 'g':
 		s=arg(s);
 		if(*s=='\0'){