diff --git a/genex/comp.c b/genex/comp.c
index 8c8496f..253b2be 100644
--- a/genex/comp.c
+++ b/genex/comp.c
@@ -200,13 +200,13 @@ void read_desc(FILE *file)
 
 
 void set_libs(struct node *node,
-    const char *(*find_lib)(const char *sym, const char **canon,
+    const char *(*find_lib)(const char *sym, const struct name **names,
     int *units))
 {
 	while (node) {
 		if (!node->child) {
 			node->lib =
-			    find_lib(node->name, &node->canon, &node->units);
+			    find_lib(node->name, &node->names, &node->units);
 			if (!node->lib) {
 				fprintf(stderr, "symbol %s not found\n",
 				    node->name);
@@ -223,9 +223,17 @@ static void dump_level(const struct node *tree, int level)
 {
 	const struct node *n;
 	const struct line *line;
+	const struct name *name;
 
 	for (n = tree; n; n = n->next) {
-		printf("%*s%s\n", 4*level, "", n->name);
+		printf("%*s%s", 4*level, "", n->name);
+		if (n->lib) {
+			for (name = n->names; name; name = name->next)
+				printf("%s%s",
+				    name == n->names ? " (" : ", ", name->s);
+			printf(")");
+		}
+		printf("\n");
 		for (line = n->comment; line; line = line->next)
 			printf("%*s\"%s\"\n", 4*level+2, "", line->s);
 		dump_level(n->child, level+1);
diff --git a/genex/comp.h b/genex/comp.h
index d40bc69..e31338a 100644
--- a/genex/comp.h
+++ b/genex/comp.h
@@ -12,6 +12,9 @@
 #ifndef COMP_H
 #define COMP_H
 
+#include "libs.h"
+
+
 struct line {
 	char *s;
 	struct line *next;
@@ -20,7 +23,8 @@ struct line {
 struct node {
 	const char *name;
 	const char *lib;	/* NULL if intermediate node */
-	const char *canon;	/* canonical name of component */
+	const struct name *names;
+				/* canonical name and aliases of component */
 	int units;		/* number of units; undefined if intermediate */
 	struct line *comment;	/* NULL if intermediate node */
 	int indent;		/* level of indentation (characters) */
@@ -36,7 +40,7 @@ extern struct node *tree;
 void read_tree(FILE *file);
 void read_desc(FILE *file);
 void set_libs(struct node *node,
-    const char *(*find_lib)(const char *sym, const char **canon,
+    const char *(*find_lib)(const char *sym, const struct name **names,
     int *units));
 void dump_tree(void);
 
diff --git a/genex/libs.c b/genex/libs.c
index 0588fcb..58c287d 100644
--- a/genex/libs.c
+++ b/genex/libs.c
@@ -22,7 +22,7 @@
 
 
 struct entry {
-	const char *name;
+	struct name *names;
 	int units;
 	struct entry *next;
 };
@@ -34,16 +34,16 @@ static struct lib {
 } *libs = NULL;
 
 
-const char *lookup_sym(const char *name, const char **canon, int *units)
+const char *lookup_sym(const char *name, const struct name **names, int *units)
 {
 	const struct lib *lib;
 	const struct entry *e;
 
 	for (lib = libs; lib; lib = lib->next)
 		for (e = lib->comps; e; e = e->next)
-			if (!strcasecmp(e->name, name)) {
-				if (canon)
-					*canon = e->name;
+			if (!strcasecmp(e->names->s, name)) {
+				if (names)
+					*names = e->names;
 				if (units)
 					*units = e->units;
 				return lib->path;
@@ -64,11 +64,26 @@ static const char *field(const char *s, int n)
 }
 
 
+static void add_name(struct entry *e, char *s)
+{
+	char *nl;
+	struct name **p;
+
+	nl = strchr(s, '\n');
+	if (nl)
+		*nl = 0;
+	for (p = &e->names; *p; p = &(*p)->next);
+	*p = alloc_type(struct name);
+	(*p)->s = stralloc(s);
+	(*p)->next = NULL;
+}
+
+
 void add_lib(const char *path)
 {
 	FILE *file;
 	struct lib *lib;
-	struct entry *e;
+	struct entry *e = NULL;
 	char buf[1024]; /* @@@ */
 	char *spc;
 	const char *s;
@@ -86,6 +101,8 @@ void add_lib(const char *path)
 	libs = lib;
 
 	while (fgets(buf, sizeof(buf), file)) {
+		if (!strncmp(buf, "ALIAS ", 6) && e)
+			add_name(e, buf+6);
 		if (strncmp(buf, "DEF ", 4))
 			continue;
 		s = field(buf, 7);
@@ -101,7 +118,8 @@ void add_lib(const char *path)
 		}
 		*spc = 0;
 		e = alloc_type(struct entry);
-		e->name = stralloc(buf+4);
+		e->names = NULL;
+		add_name(e, buf+4);
 		e->units = atoi(s);
 		if (!e->units) {
 			fprintf(stderr, "invalid number of units in %s\n",
diff --git a/genex/libs.h b/genex/libs.h
index 71ba1a0..35a7b46 100644
--- a/genex/libs.h
+++ b/genex/libs.h
@@ -12,7 +12,12 @@
 #ifndef LIBS_H
 #define LIBS_H
 
-const char *lookup_sym(const char *name, const char **canon, int *units);
+struct name {
+	const char *s;
+	struct name *next;
+};
+
+const char *lookup_sym(const char *name, const struct name **names, int *units);
 void add_lib(const char *path);
 void add_libdir(const char *path);
 
diff --git a/genex/pdf.c b/genex/pdf.c
index 9a9f5a8..a464007 100644
--- a/genex/pdf.c
+++ b/genex/pdf.c
@@ -95,7 +95,7 @@ static void make_title(FILE *file, const struct node *node, int unit)
 	fprintf(file, "/%s findfont %d scalefont setfont\n",
 	    format.name.font, format.name.size);
 	fprintf(file, "%d %d moveto\n", format.left, -format.name.y);
-	ps_string(file, node->canon);
+	ps_string(file, node->names->s);
 	fprintf(file, " show\n");
 	if (node->units > 1)
 		fprintf(file, " ( \\(%c\\)) show\n", 'A'+unit);
@@ -177,7 +177,7 @@ static void convert_comp(const struct node *node, FILE *out)
 		if (!i && node->comment)
 			print_comment(out, node->comment);
 		if (asprintf(&tmp, "./sym2xps '%s' '%s' %d '%s' '%s'", 
-		    node->lib, node->canon, i+1, "tmp", "tmp.ps") < 0) {
+		    node->lib, node->names->s, i+1, "tmp", "tmp.ps") < 0) {
 			perror("asprintf");
 			exit(1);
 		}