diff --git a/README.md b/README.md
index ceabc0b..60ea6a5 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,8 @@ configuration file is in json format, it has all the information required by run
     "queue": "normal"
   },
   "gs": {
-    "mem": 10000
+    "mem": 10000,
+    "oe": 1
   },
   "kcp": {
     "core": 12,
@@ -153,12 +154,13 @@ This file use several key words to define resource allocation, input files or ou
 - **ref**: Assembly file path
 - **out_dir**: Working directory
 - **ispb**: Bool value set for pacbio data, 0 for Illumina data
+- **oe**: only remove the haplotypic duplications occuring at the ends of the contigs
 
 **Notice**: **isdip** is deprecated. 
 
-The dictionary "kcp" keeps paramaters for run_kcm script.  
-The dictionary "gs" sets parameters for get\_seqs (purge\_dups executable file), designed to produce primary contigs and haplotigs.  
-The dictionary "pd" sets parameters for purge\_dups (purge\_dups executable file), designed to purge haplotigs and overlaps in an assembly.  
+The dictionary **"kcp"** keeps paramaters for run_kcm script.  
+The dictionary **"gs"** sets parameters for get\_seqs (purge\_dups executable file), designed to produce primary contigs and haplotigs.  
+The dictionary **"pd"** sets parameters for purge\_dups (purge\_dups executable file), designed to purge haplotigs and overlaps in an assembly.  
 The dictionary **"cc"** sets parameters for **minimap2/bwa**.  
 The dictionary **"sa"** sets parameters for minimap2.  
 The dictionary "busco" sets parameters for run\_busco. 
@@ -237,9 +239,9 @@ bin/purge_dups -2 -T cutoffs -c PB.base.cov $pri_asm.split.self.paf.gz > dups.be
 ### Step 3. Get purged primary and haplotig sequences from draft assembly. 
 
 ```
-bin/get_seqs dups.bed $pri_asm 
+bin/get_seqs -e dups.bed $pri_asm 
 ``` 
-**Notice** this command will remove haplotypic duplications at the ends and in the middle of the contigs. If you just want to remove the duplications at the ends, please use `-e` option. For more options, please refer to `get_seqs -h`.
+**Notice** this command will only remove haplotypic duplications at the ends of the contigs. If you also want to remove the duplications in the middle, please remove `-e` option at your own risk, it may delete false positive duplications. For more options, please refer to `get_seqs -h`.
 
 ### Step 4. Merge hap.fa and $hap_asm and redo the above steps to get a decent haplotig set. 
 
diff --git a/scripts/pd_config.py b/scripts/pd_config.py
index dbe8b8b..537b4a3 100755
--- a/scripts/pd_config.py
+++ b/scripts/pd_config.py
@@ -34,7 +34,7 @@ def gen_config(r, d, fn, skipB):
             "sa":{"core":12, "mem":10000, "queue":"normal"},
             "busco":{"core":12, "mem":20000, "queue":"long", "skip":0, "lineage":used_lineage, "prefix":ref_fn+"_purged", "tmpdir":"busco_tmp"},
             "pd":{"mem": 20000, "queue": "normal"}, 
-            "gs": {"mem": 10000}, 
+            "gs": {"mem": 10000, "oe": 1}, 
             "kcp": {"core":12, "mem":30000, "fofn":"", "prefix":ref_fn+"_purged_kcm", "tmpdir":"kcp_tmp", "skip": 0}, 
             "ref":r, "out_dir":ref_fn
     }
diff --git a/scripts/run_purge_dups.py b/scripts/run_purge_dups.py
index 5bd032b..b6233b2 100755
--- a/scripts/run_purge_dups.py
+++ b/scripts/run_purge_dups.py
@@ -70,12 +70,14 @@ def purge_dups(man, pltfm, paf_fn, base_cov_fn, cutoff_fn, core_lim, mem_lim, qu
     rtn = man.start([j], True)
     return rtn    
 #INPUT: dups assembly
-def get_seqs(man, pltfm, ref, dups_fn, core_lim, mem_lim, out_dir, bin_dir, spid):
+def get_seqs(man, pltfm, ref, dups_fn, core_lim, mem_lim, onlyend, out_dir, bin_dir, spid):
     mkdir(out_dir) 
     out_fn = "{0}/{1}.purged.fa".format(out_dir, get_rm_prefix(ref)) 
     out_red_fn = "{0}/{1}.red.fa".format(out_dir, get_rm_prefix(ref))
     out_prefx="{0}/{1}".format(out_dir, get_rm_prefix(ref))
     jcmd = "{0}/get_seqs -p {5} {1} {2}".format(bin_dir, dups_fn, ref, out_fn, out_red_fn, out_prefx)
+    if onlyend:
+        jcmd = "{0}/get_seqs -e -p {5} {1} {2}".format(bin_dir, dups_fn, ref, out_fn, out_red_fn, out_prefx)
     jjn = "get_seqs_{}".format(spid)
     jout = "{0}/{1}_%J.o".format(out_dir, jjn)
     jerr = "{0}/{1}_%J.e".format(out_dir, jjn)
@@ -264,11 +266,14 @@ def cont(config_fn, bin_dir, spid, pltfm, _wait, _retries):
             rtn = purge_dups(man, pltfm, in_paf_fn, "", "", 1, pd_mem, pd_queue, out_pd_dir, bin_dir, spid)
     if not rtn:
         gs_mem = 10000
+        gs_onlyend = 1
         if "gs" in config_dict:
             gs_mem = config_dict["gs"]["mem"]
+        if "oe" in config_dict:
+            gs_onlyend=config_dict["gs"]["oe"]
         in_dups_fn = "{0}/dups.bed".format(out_pd_dir)
         out_dir = "{}/seqs".format(out_dir)
-        rtn = get_seqs(man, pltfm, ref, in_dups_fn, 1, gs_mem, out_dir, bin_dir, spid) 
+        rtn = get_seqs(man, pltfm, ref, in_dups_fn, 1, gs_mem, gs_onlyend, out_dir, bin_dir, spid) 
     
     procs = [] 
     workdir = out_dir
diff --git a/src/version.h b/src/version.h
index 980e4ef..86b10f6 100644
--- a/src/version.h
+++ b/src/version.h
@@ -17,4 +17,4 @@
  */
 #define MAJOR 1
 #define MINOR 2
-#define PATCH 3
+#define PATCH 5