Index: trunk/src/plugins/sch_dialogs/dlg_project.c
===================================================================
--- trunk/src/plugins/sch_dialogs/dlg_project.c	(revision 10256)
+++ trunk/src/plugins/sch_dialogs/dlg_project.c	(revision 10257)
@@ -80,6 +80,7 @@
 		case 0: ty = CSCH_SHTY_ROOT; break;
 		case 1: ty = CSCH_SHTY_AUX; break;
 		case 2: ty = CSCH_SHTY_UNLISTED; break;
+		case 3: ty = CSCH_SHTY_EXTERNAL; break;
 		default:
 			rnd_message(RND_MSG_ERROR, "prj2dlg_load_tree(): internal error: invalid SCOPE %d\n", SCOPE);
 			return;
@@ -149,6 +150,7 @@
 		case 0: target="aux"; break;
 		case 1:
 		case 2: target="root"; break;
+		case 3: target="aux"; break;
 		default:
 			return;
 	}
@@ -194,7 +196,7 @@
 {
 	prjdlg_ctx_t *ctx = &prjdlg;
 	rnd_hid_dad_buttons_t clbtn[] = {{"Close", 0}, {NULL, 0}};
-	char *lists[] = {"root sheets (directly compiled)", "aux sheets (referenced by hierarchy)", "unlisted sheets", NULL};
+	char *lists[] = {"root sheets (directly compiled)", "aux sheets (referenced by hierarchy)", "unlisted sheets", "external sheets", NULL};
 
 	ctx->prj = prj;
 
@@ -214,7 +216,7 @@
 		RND_DAD_BEGIN_HBOX(ctx->dlg); /* bottom buttons */
 			RND_DAD_BUTTON(ctx->dlg, "toggle root");
 				RND_DAD_CHANGE_CB(ctx->dlg, prj_sheet_toggle_cb);
-				RND_DAD_HELP(ctx->dlg, "If the selected sheet is a root sheet, make it an aux sheet;\nif it is an aux sheet, make it a root sheet;\nif it is an unlisted sheet, make it a root sheet.");
+				RND_DAD_HELP(ctx->dlg, "If the selected sheet is a root sheet, make it an aux sheet;\nif it is an aux sheet, make it a root sheet;\nif it is an unlisted sheet, make it a root sheet;\if it is an external sheet, make it an aux sheet.");
 			RND_DAD_BUTTON(ctx->dlg, "new");
 				RND_DAD_CHANGE_CB(ctx->dlg, prj_sheet_new_cb);
 				RND_DAD_HELP(ctx->dlg, "Create a new root sheet");