diff --git a/.gitignore b/.gitignore
index 13a44be..694412d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,6 @@ packs-system/**/CURRENT
 packs-system/**/LOCK
 packs-system/**/MANIFEST-*
 
+# YAML source for pack round-trip
+packs_src/
+
diff --git a/tools/pullYMLtoLDB.mjs b/tools/pullYMLtoLDB.mjs
new file mode 100644
index 0000000..d9c9f70
--- /dev/null
+++ b/tools/pullYMLtoLDB.mjs
@@ -0,0 +1,2 @@
+import { CompendiumsManager } from './CompendiumsManager.mjs';
+CompendiumsManager.packToDistDir('packs_src', 'packs-system');
diff --git a/tools/pushLDBtoYML.mjs b/tools/pushLDBtoYML.mjs
new file mode 100644
index 0000000..a0e3d56
--- /dev/null
+++ b/tools/pushLDBtoYML.mjs
@@ -0,0 +1,2 @@
+import { CompendiumsManager } from './CompendiumsManager.mjs';
+CompendiumsManager.unpackToSrcDir('packs_src', 'packs-system');