diff --git a/cfg/nspr.cfg b/cfg/nspr.cfg
index afa4612cc..99ad46582 100644
--- a/cfg/nspr.cfg
+++ b/cfg/nspr.cfg
@@ -1,4 +1,9 @@
 <?xml version="1.0"?>
+<!-- Netscape Portable Runtime (NSPR) provides a platform-neutral API for system level and libc-like functions. 
+     The API is used in the Mozilla clients, many of Red Hat's and Oracle's server applications, and other software offerings.
+     Ref.: 
+      https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSPR 
+-->
 <def>
   <define name="PR_EXPORT(__type)" value=""/>
   <define name="PR_EXPORT_DATA(__type)" value=""/>