diff --git a/NEWS b/NEWS
index 407f3b8a..7d9c9c94 100644
--- a/NEWS
+++ b/NEWS
@@ -5,7 +5,7 @@ cli : new : zstdmt symlink hardwired to `zstd -T0`
 cli : new : command --threads=# (#671)
 cli : changed : cover dictionary builder by default, for improved quality, by Nick Terrell
 cli : new : commands --train-cover and --train-legacy, to select dictionary algorithm and parameters
-cli : new : experimental target `zstd4`, with support for lz4 format, by Sean Purcell
+cli : experimental targets `zstd4` and `xzstd4`, with support for lz4 format, by Sean Purcell
 cli : fix : does not output compressed data on console
 cli : fix : ignore symbolic links unless --force specified,
 API : breaking change : ZSTD_createCDict_advanced(), only use compressionParameters as argument
diff --git a/doc/images/dict-cr.png b/doc/images/dict-cr.png
index f555a46c..f3a9ce2b 100644
Binary files a/doc/images/dict-cr.png and b/doc/images/dict-cr.png differ
diff --git a/doc/images/dict-cs.png b/doc/images/dict-cs.png
index ccc02b0d..55e5ef51 100644
Binary files a/doc/images/dict-cs.png and b/doc/images/dict-cs.png differ
diff --git a/doc/images/dict-ds.png b/doc/images/dict-ds.png
index 858cad68..1153f1b9 100644
Binary files a/doc/images/dict-ds.png and b/doc/images/dict-ds.png differ
diff --git a/programs/Makefile b/programs/Makefile
index 491b3ed3..0c920a87 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -106,6 +106,7 @@ ZLIBLD = -lz
 else
 ZLIB_MSG := $(NO_ZLIB_MSG)
 endif
+
 # lzma detection
 NO_LZMA_MSG := ==> no liblzma, building zstd without .xz/.lzma support
 HAVE_LZMA := $(shell printf '\#include <lzma.h>\nint main(void) { return 0; }' | $(CC) $(FLAGS) -o have_lzma$(EXT) -x c - -llzma 2> $(VOID) && rm have_lzma$(EXT) && echo 1 || echo 0)
@@ -116,6 +117,7 @@ LZMALD = -llzma
 else
 LZMA_MSG := $(NO_LZMA_MSG)
 endif
+
 # lz4 detection
 NO_LZ4_MSG := ==> no liblz4, building zstd without .lz4 support
 HAVE_LZ4 := $(shell printf '\#include <lz4frame.h>\n\#include <lz4.h>\nint main(void) { return 0; }' | $(CC) $(FLAGS) -o have_lz4$(EXT) -x c - -llz4 2> $(VOID) && rm have_lz4$(EXT) && echo 1 || echo 0)
@@ -127,9 +129,6 @@ else
 LZ4_MSG := $(NO_LZ4_MSG)
 endif
 
-MD2ROFF  =ronn
-MD2ROFF_FLAGS  = --roff --warnings --manual="User Commands" --organization="zstd $(ZSTD_VERSION)"
-
 .PHONY: default all clean clean_decomp_o install uninstall generate_res
 
 default: zstd-release
@@ -221,6 +220,9 @@ clean:
 clean_decomp_o:
 	@$(RM) $(ZSTDDECOMP_O)
 
+MD2ROFF = ronn
+MD2ROFF_FLAGS = --roff --warnings --manual="User Commands" --organization="zstd $(ZSTD_VERSION)"
+
 zstd.1: zstd.1.md
 	cat $^ | $(MD2ROFF) $(MD2ROFF_FLAGS) | sed -n '/^\.\\\".*/!p' > $@