From a2b3d7c7d2b277db7acb7f3c52c1879c1bad3147 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Thu, 28 Aug 2025 12:34:01 +0200
Subject: [PATCH] Enhance comment.

---
 src/frontend/inpcom.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/frontend/inpcom.c b/src/frontend/inpcom.c
index a890d1cd9..ff9bb8072 100644
--- a/src/frontend/inpcom.c
+++ b/src/frontend/inpcom.c
@@ -3967,7 +3967,8 @@ static void expand_section_references(struct card *c, const char *dir_name)
             tfree(filename);
         }
         else if (ciprefix(".lib", c->line)) {
-            /* add SOA check info direcly after inserting the library */
+            /* add SOA check info direcly after inserting the library.
+               SWSOA is used in the Open PDK from IHP to enable SOA checks. */
             if (cp_getvar("soacheck", CP_BOOL, NULL, 0))
                 insert_new_line(c, copy(".param SWSOA=1"), c->linenum + 1, 0, "internal");
             c = expand_section_ref(c, dir_name);