From dc9bbaf90e87cd02ef8fc5c0213ea97ce4c1f700 Mon Sep 17 00:00:00 2001
From: Xavier Robin <xavalias-github@xavier.robin.name>
Date: Tue, 25 Jul 2023 09:45:35 +0200
Subject: [PATCH] doc: SCHWED-6002 document missing values

---
 modules/conop/doc/compoundlib.rst | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/modules/conop/doc/compoundlib.rst b/modules/conop/doc/compoundlib.rst
index d211f631e..539096827 100644
--- a/modules/conop/doc/compoundlib.rst
+++ b/modules/conop/doc/compoundlib.rst
@@ -156,7 +156,8 @@ build the compound library manually.
     
   .. attribute:: inchi
   
-    The InChI code of this compound, e.g  '1S/H2O/h1H2' for water.
+    The InChI code of this compound, e.g  '1S/H2O/h1H2' for water, or an empty
+    string if missing.
     Read-only.
     
     :type: :class:`str`
@@ -164,13 +165,16 @@ build the compound library manually.
   .. attribute:: inchi_key
   
     The InChIKey of this compound, e.g.
-    'XLYOFNOQVPJJNP-UHFFFAOYSA-N' for water. Read-only.
+    'XLYOFNOQVPJJNP-UHFFFAOYSA-N' for water, or an empty string if missing.
+    Read-only.
     
     :type: :class:`str`
 
   .. attribute:: smiles
 
-    The SMILES string of this compound, e.g 'O' for water. Read-only.
+    The SMILES string of this compound, e.g 'O' for water, or an empty string
+    if missing. Read-only.
+
     The string is read from the canonical SMILES produced by the
     OpenEye OEToolkits.
 
-- 
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