From 4a452f86b7f22e72d5eb08b1ce251e3f33a8a06b Mon Sep 17 00:00:00 2001
From: Gordon Williams <gw@pur3.co.uk>
Date: Thu, 11 Feb 2021 11:29:01 +0000
Subject: [PATCH] docs

---
 apps/gpssetup/README.md | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/apps/gpssetup/README.md b/apps/gpssetup/README.md
index 4d3922f50..8e64c6a30 100644
--- a/apps/gpssetup/README.md
+++ b/apps/gpssetup/README.md
@@ -84,7 +84,20 @@ has been configured:
 require("gpssetup").setPowerMode().then(function() {
   Bangle.setGPSPower(0);
 });
-```  
+```
+
+**Note:** It's not guaranteed that the user will have installed the `gpssetup`
+app/module. It might be worth checking for its existence by surrounding the
+`require` call with `try...catch` block.
+
+```
+var gpssetup;
+try {
+  gpssetup = require("gpssetup")
+} catch(e) {
+  E.showMessage("gpssetup\nnot installed");
+}
+```
 
 ## References