diff --git a/000_AI_WORKSPACE/software-engineer/greetings/002_guideline.md b/000_AI_WORKSPACE/software-engineer/greetings/002_guideline.md
index f6decdf..5ea4c6f 100644
--- a/000_AI_WORKSPACE/software-engineer/greetings/002_guideline.md
+++ b/000_AI_WORKSPACE/software-engineer/greetings/002_guideline.md
@@ -31,3 +31,7 @@
 - `001_documentation/Requirements/REQ0019/index.md` describes updated system architecture
 
 - if the directory contains `_GUIDELINES.md`, please read it before operation
+
+## Abbreviations
+
+T.B.A.