Index: trunk/src_plugins/cam/cam_compile.c
===================================================================
--- trunk/src_plugins/cam/cam_compile.c	(revision 27617)
+++ trunk/src_plugins/cam/cam_compile.c	(revision 27618)
@@ -77,6 +77,20 @@
 			/* ignore */
 			break;
 
+		case PCB_CAM_PARTIAL:
+			if (code->op.partial.arg != NULL) {
+				int ret;
+				ctx->partial = 1;
+				ret = pcb_actionl("query", "setflag:exportsel", code->op.partial.arg, NULL);
+			}
+			else {
+				if (ctx->partial) {
+					pcb_data_clear_flag(PCB->Data, PCB_FLAG_EXPORTSEL, 0, 0);
+					ctx->partial = 0;
+				}
+			}
+			break;
+
 		case PCB_CAM_WRITE:
 			if (ctx->exporter == NULL) {
 				pcb_message(PCB_MSG_ERROR, "cam: no exporter selected before write\n");
@@ -129,7 +143,10 @@
 {
 	int res = 0, n, have_gui, currly = INDEXOFCURRENT;
 	int save_l_ons[PCB_MAX_LAYER], save_g_ons[PCB_MAX_LAYERGRP];
-	
+
+	if (ctx->has_partial)
+		pcb_data_clear_flag(PCB->Data, PCB_FLAG_EXPORTSEL, 0, 0);
+
 	have_gui = (pcb_gui != NULL) && pcb_gui->gui;
 	if (have_gui) {
 		pcb_hid_save_and_show_layer_ons(save_l_ons);
@@ -143,6 +160,11 @@
 		}
 	}
 
+	if (ctx->partial) {
+		pcb_data_clear_flag(PCB->Data, PCB_FLAG_EXPORTSEL, 0, 0);
+		ctx->partial = 0;
+	}
+
 	if (have_gui) {
 		pcb_hid_restore_layer_ons(save_l_ons);
 		pcb_hid_restore_layergrp_ons(save_g_ons);
@@ -163,6 +185,18 @@
 		code->inst = PCB_CAM_WRITE;
 		code->op.write.arg = pcb_strdup(arg);
 	}
+	else if (strcmp(cmd, "partial") == 0) {
+		ctx->has_partial = 1;
+		code->inst = PCB_CAM_PARTIAL;
+		if ((arg == NULL) || (*arg == '\0'))
+			code->op.partial.arg = NULL;
+		else
+			code->op.partial.arg = pcb_strdup(arg);
+	}
+	else if (strcmp(cmd, "full") == 0) {
+		code->inst = PCB_CAM_PARTIAL;
+		code->op.write.arg = NULL;
+	}
 	else if (strcmp(cmd, "plugin") == 0) {
 		char *curr, *next;
 		int maxa;
Index: trunk/src_plugins/cam/cam_compile.h
===================================================================
--- trunk/src_plugins/cam/cam_compile.h	(revision 27617)
+++ trunk/src_plugins/cam/cam_compile.h	(revision 27618)
@@ -32,7 +32,8 @@
 typedef enum {
 	PCB_CAM_DESC,
 	PCB_CAM_PLUGIN,
-	PCB_CAM_WRITE
+	PCB_CAM_WRITE,
+	PCB_CAM_PARTIAL
 } pcb_cam_inst_t;
 
 typedef struct {
@@ -51,6 +52,9 @@
 		} write;
 		struct {
 			char *arg;
+		} partial;
+		struct {
+			char *arg;
 		} prefix;
 	} op;
 } pcb_cam_code_t;
@@ -71,7 +75,10 @@
 typedef struct {
 	char *prefix;            /* strdup'd file name prefix from the last prefix command */
 	pcb_hid_t *exporter;
+	unsigned partial:1;      /* when 1, there are objects marked with the EXPORTSEL flag */
 
+	unsigned has_partial:1;  /* the code has partial in it so an initial flag reset is needed */
+
 	char *args;              /* strdup'd argument string from the last plugin command - already split up */
 	char **argv;             /* [0] and [1] are for --cam; the rest point into args */
 	int argc;