TopologyMap: Allow multiple device regexes per line

netbox/extras/models.py

@@ -77,7 +77,10 @@ class TopologyMap(models.Model):
     name = models.CharField(max_length=50, unique=True)
     slug = models.SlugField(unique=True)
     site = models.ForeignKey(Site, related_name='topology_maps', blank=True, null=True)
-    device_patterns = models.TextField()
+    device_patterns = models.TextField(help_text="Identify devices to include in the diagram using regular expressions,"
+                                                 "one per line. Each line will result in a new tier of the drawing. "
+                                                 "Separate multiple regexes on a line using commas. Devices will be "
+                                                 "rendered in the order they are defined.")
     description = models.CharField(max_length=100, blank=True)
 
     class Meta: