diff --git a/cli/lz/ulzdec.tal b/cli/lz/ulzdec.tal
index e1f9dff..d284de1 100644
--- a/cli/lz/ulzdec.tal
+++ b/cli/lz/ulzdec.tal
@@ -40,8 +40,18 @@
 	;src <decode_ulz>
 	( | export )
 	;dst .File/name DEO2
-	;mem DUP2 .ptr LDZ2 SUB2 .File/length DEO2
-	.File/write DEO2
+	.ptr LDZ2 ;mem SUB2 .File/length DEO2
+	;mem .File/write DEO2
+	( | summary )
+	;dict/decompressed <pstr>
+	;src <pstr>
+	;dict/spacer <pstr>
+	;dst <pstr>
+	[ LIT2 "( 18 ] DEO
+	.ptr LDZ2 ;mem SUB2 <pdec>
+	;dict/bytes <pstr>
+	[ LIT2 ") 18 ] DEO
+	#0a18 DEO
 	( halt ) #800f DEO
 	BRK
 
@@ -98,12 +108,32 @@
 	;&b .File/read DEO2
 	[ LIT &b $1 ] JMP2r
 
+@<pstr> ( str* -- )
+	&w LDAk #18 DEO
+	INC2 & LDAk ?&w
+	POP2 JMP2r
+
 @<perr> ( str* -- )
 	&w LDAk #19 DEO
 	INC2 & LDAk ?&w
 	POP2 JMP2r
 
+@<pdec> ( short* -- )
+	#2710 [ LIT2r 00fb ]
+	&w ( -- )
+		DIV2k #000a DIV2k MUL2 SUB2 SWPr EQUk OVR STHkr EQU AND ?{
+			DUP [ LIT "0 ] ADD #19 DEO
+			INCr }
+		POP2 #000a DIV2 SWPr INCr STHkr ?&w
+	POP2r POP2 POP2 JMP2r
+
+(
+@| mem )
+
 @dict &usage "usage: 20 "ulzdec.rom 20 "a.bin 20 "b.ulz 0a $1
+	&decompressed "Decompressed 20 $1
+	&spacer 20 "-> 20 $1
+	&bytes 20 "bytes $1
 
 @mem