From f9dea9a248841d4f3bbc630ed3dba3579c6d17f8 Mon Sep 17 00:00:00 2001
From: Michael Stenta <mike@mstenta.net>
Date: Fri, 30 Oct 2020 19:10:42 -0400
Subject: [PATCH] Expand bcscale() comment in farm_map_set_bcscale().

---
 modules/farm/farm_map/farm_map.geo.inc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/farm/farm_map/farm_map.geo.inc b/modules/farm/farm_map/farm_map.geo.inc
index b7e07e947..f62c852bb 100644
--- a/modules/farm/farm_map/farm_map.geo.inc
+++ b/modules/farm/farm_map/farm_map.geo.inc
@@ -55,6 +55,8 @@ function farm_map_set_bcscale($reset = FALSE) {
   }
 
   // Set the scale, if it has not been already.
+  // bcscale() sets the scale globally, and returns the previous scale, which we
+  // save in the static $scale variable, so that we can reset later.
   if (!isset($scale)) {
     $scale = bcscale(24);
   }