diff --git a/module/doc/lang/de.php b/module/doc/lang/de.php
index 77d878058c..7699b3ebb0 100644
--- a/module/doc/lang/de.php
+++ b/module/doc/lang/de.php
@@ -264,13 +264,14 @@ $lang->doc->emptyError      = 'Not empty';
 $lang->doc->caselib         = 'Case Library';
 $lang->doc->customSearch    = 'Custom Search';
 
-$lang->doc->addChapter    = 'Add chapter';
-$lang->doc->editChapter   = 'Edit chapter';
-$lang->doc->sortChapter   = 'Sort chapter';
-$lang->doc->deleteChapter = 'Delete chapter';
-$lang->doc->addSubChapter = 'Add sub chapter';
-$lang->doc->addSubDoc     = 'Add sub document';
-$lang->doc->chapterName   = 'Chapter name';
+$lang->doc->addChapter     = 'Add chapter';
+$lang->doc->editChapter    = 'Edit chapter';
+$lang->doc->sortChapter    = 'Sort chapter';
+$lang->doc->deleteChapter  = 'Delete chapter';
+$lang->doc->addSubChapter  = 'Add sub chapter';
+$lang->doc->addSameChapter = 'Add same chapter';
+$lang->doc->addSubDoc      = 'Add sub document';
+$lang->doc->chapterName    = 'Chapter name';
 
 $lang->doc->tips = new stdclass();
 $lang->doc->tips->noProduct   = 'No product, please create first';
@@ -660,5 +661,6 @@ $lang->doc->docLang->loadingFile                 = 'Downloading document images.
 $lang->doc->docLang->needEditable                = $lang->doc->needEditable;
 $lang->doc->docLang->addChapter                  = $lang->doc->addChapter;
 $lang->doc->docLang->addSubChapter               = $lang->doc->addSubChapter;
+$lang->doc->docLang->addSameChapter              = $lang->doc->addSameChapter;
 $lang->doc->docLang->addSubDoc                   = $lang->doc->addSubDoc;
 $lang->doc->docLang->chapterName                 = $lang->doc->chapterName;
diff --git a/module/doc/lang/en.php b/module/doc/lang/en.php
index 528b53d47d..a4866fbff5 100644
--- a/module/doc/lang/en.php
+++ b/module/doc/lang/en.php
@@ -264,13 +264,14 @@ $lang->doc->emptyError      = 'Not empty';
 $lang->doc->caselib         = 'Case Library';
 $lang->doc->customSearch    = 'Custom Search';
 
-$lang->doc->addChapter    = 'Add chapter';
-$lang->doc->editChapter   = 'Edit chapter';
-$lang->doc->sortChapter   = 'Sort chapter';
-$lang->doc->deleteChapter = 'Delete chapter';
-$lang->doc->addSubChapter = 'Add sub chapter';
-$lang->doc->addSubDoc     = 'Add sub document';
-$lang->doc->chapterName   = 'Chapter name';
+$lang->doc->addChapter     = 'Add chapter';
+$lang->doc->editChapter    = 'Edit chapter';
+$lang->doc->sortChapter    = 'Sort chapter';
+$lang->doc->deleteChapter  = 'Delete chapter';
+$lang->doc->addSubChapter  = 'Add sub chapter';
+$lang->doc->addSameChapter = 'Add same chapter';
+$lang->doc->addSubDoc      = 'Add sub document';
+$lang->doc->chapterName    = 'Chapter name';
 
 $lang->doc->tips = new stdclass();
 $lang->doc->tips->noProduct   = 'No product, please create first';
@@ -660,5 +661,6 @@ $lang->doc->docLang->loadingFile                 = 'Downloading document images.
 $lang->doc->docLang->needEditable                = $lang->doc->needEditable;
 $lang->doc->docLang->addChapter                  = $lang->doc->addChapter;
 $lang->doc->docLang->addSubChapter               = $lang->doc->addSubChapter;
+$lang->doc->docLang->addSameChapter              = $lang->doc->addSameChapter;
 $lang->doc->docLang->addSubDoc                   = $lang->doc->addSubDoc;
 $lang->doc->docLang->chapterName                 = $lang->doc->chapterName;
diff --git a/module/doc/lang/fr.php b/module/doc/lang/fr.php
index 5de477611d..9bcfc5a8aa 100644
--- a/module/doc/lang/fr.php
+++ b/module/doc/lang/fr.php
@@ -264,13 +264,14 @@ $lang->doc->emptyError      = 'Not empty';
 $lang->doc->caselib         = 'Case Library';
 $lang->doc->customSearch    = 'Custom Search';
 
-$lang->doc->addChapter    = 'Add chapter';
-$lang->doc->editChapter   = 'Edit chapter';
-$lang->doc->sortChapter   = 'Sort chapter';
-$lang->doc->deleteChapter = 'Delete chapter';
-$lang->doc->addSubChapter = 'Add sub chapter';
-$lang->doc->addSubDoc     = 'Add sub document';
-$lang->doc->chapterName   = 'Chapter name';
+$lang->doc->addChapter     = 'Add chapter';
+$lang->doc->editChapter    = 'Edit chapter';
+$lang->doc->sortChapter    = 'Sort chapter';
+$lang->doc->deleteChapter  = 'Delete chapter';
+$lang->doc->addSubChapter  = 'Add sub chapter';
+$lang->doc->addSameChapter = 'Add same chapter';
+$lang->doc->addSubDoc      = 'Add sub document';
+$lang->doc->chapterName    = 'Chapter name';
 
 $lang->doc->tips = new stdclass();
 $lang->doc->tips->noProduct   = 'No product, please create first';
@@ -660,5 +661,6 @@ $lang->doc->docLang->loadingFile                 = 'Downloading document images.
 $lang->doc->docLang->needEditable                = $lang->doc->needEditable;
 $lang->doc->docLang->addChapter                  = $lang->doc->addChapter;
 $lang->doc->docLang->addSubChapter               = $lang->doc->addSubChapter;
+$lang->doc->docLang->addSameChapter              = $lang->doc->addSameChapter;
 $lang->doc->docLang->addSubDoc                   = $lang->doc->addSubDoc;
 $lang->doc->docLang->chapterName                 = $lang->doc->chapterName;
diff --git a/module/doc/lang/zh-cn.php b/module/doc/lang/zh-cn.php
index a1b61d7f7f..94ca0b44e8 100644
--- a/module/doc/lang/zh-cn.php
+++ b/module/doc/lang/zh-cn.php
@@ -264,13 +264,14 @@ $lang->doc->emptyError      = '不能为空';
 $lang->doc->caselib         = '用例库';
 $lang->doc->customSearch    = '自定义搜索';
 
-$lang->doc->addChapter    = '添加章节';
-$lang->doc->editChapter   = '添加章节';
-$lang->doc->sortChapter   = '排序章节';
-$lang->doc->deleteChapter = '删除章节';
-$lang->doc->addSubChapter = '添加子章节';
-$lang->doc->addSubDoc     = '添加子文档';
-$lang->doc->chapterName   = '章节名称';
+$lang->doc->addChapter     = '添加章节';
+$lang->doc->editChapter    = '编辑章节';
+$lang->doc->sortChapter    = '排序章节';
+$lang->doc->deleteChapter  = '删除章节';
+$lang->doc->addSubChapter  = '添加子章节';
+$lang->doc->addSameChapter = '添加同级章节';
+$lang->doc->addSubDoc      = '添加子文档';
+$lang->doc->chapterName    = '章节名称';
 
 $lang->doc->tips = new stdclass();
 $lang->doc->tips->noProduct   = '暂时没有产品，请先创建';
@@ -659,6 +660,10 @@ $lang->doc->docLang->list                        = $lang->doc->list;
 $lang->doc->docLang->loadingFile                 = '正在下载图片...';
 $lang->doc->docLang->needEditable                = $lang->doc->needEditable;
 $lang->doc->docLang->addChapter                  = $lang->doc->addChapter;
+$lang->doc->docLang->editChapter                 = $lang->doc->editChapter;
+$lang->doc->docLang->sortChapter                 = $lang->doc->sortChapter;
+$lang->doc->docLang->deleteChapter               = $lang->doc->deleteChapter;
 $lang->doc->docLang->addSubChapter               = $lang->doc->addSubChapter;
+$lang->doc->docLang->addSameChapter              = $lang->doc->addSameChapter;
 $lang->doc->docLang->addSubDoc                   = $lang->doc->addSubDoc;
 $lang->doc->docLang->chapterName                 = $lang->doc->chapterName;
diff --git a/module/doc/ui/setdocbasic.html.php b/module/doc/ui/setdocbasic.html.php
index 08d4dad192..bf171387df 100644
--- a/module/doc/ui/setdocbasic.html.php
+++ b/module/doc/ui/setdocbasic.html.php
@@ -39,6 +39,7 @@ formPanel
        set::label($lang->doc->title),
        set::name('title'),
        set::required(true),
+       set::value(isset($doc) ? $doc->title : '')
     ) : null,
     $objectType == 'project'
         ? formRow(