Upload How to add message history to chain.pdf

.gitattributes

@@ -33,3 +33,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
+How[[:space:]]to[[:space:]]add[[:space:]]message[[:space:]]history[[:space:]]to[[:space:]]chain.pdf filter=lfs diff=lfs merge=lfs -text

How to add message history to chain.pdf

@@ -0,0 +1,3 @@
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