I've just created a short Word document called December_12.docx and copied it on a Unix platform. Then made a copy of it called December_12.zip. Then, unzipping it shows this: 
$cp December_12.docx December_12.zip
$unzip December_12.zip
Archive:  December_12.zip
  inflating: [Content_Types].xml
  inflating: _rels/.rels
  inflating: word/_rels/document.xml.rels
  inflating: word/document.xml
  inflating: word/theme/theme1.xml
  inflating: word/settings.xml
  inflating: word/webSettings.xml
  inflating: word/stylesWithEffects.xml
  inflating: docProps/core.xml
  inflating: word/styles.xml
  inflating: word/fontTable.xml
  inflating: docProps/app.xml

[download]
Now you could in principle edit the word/document.xml document, except that the XML looks quite messy: 
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<w:document xmlns:wpc="http://schemas.microsoft.com/office/word/2010/w
+ordprocessingCanvas" xmlns:mc="http://schemas.openxmlformats.org/mark
+up-compatibility/2006" xmlns:o="urn:schemas-microsoft-com:office:offi
+ce" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/re
+lationships" xmlns:m="http://schemas.openxmlformats.org/officeDocumen
+t/2006/math" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:wp14="http
+://schemas.microsoft.com/office/word/2010/wordprocessingDrawing" xmln
+s:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessing
+Drawing" xmlns:w10="urn:schemas-microsoft-com:office:word" xmlns:w="h
+ttp://schemas.openxmlformats.org/wordprocessingml/2006/main" xmlns:w1
+4="http://schemas.microsoft.com/office/word/2010/wordml" xmlns:wpg="h
+ttp://schemas.microsoft.com/office/word/2010/wordprocessingGroup" xml
+ns:wpi="http://schemas.microsoft.com/office/word/2010/wordprocessingI
+nk" xmlns:wne="http://schemas.microsoft.com/office/word/2006/wordml" 
+xmlns:wps="http://schemas.microsoft.com/office/word/2010/wordprocessi
+ngShape" mc:Ignorable="w14 wp14"><w:body><w:p w:rsidR="006C10F5" w:rs
+idRDefault="00C4263D"/><w:p w:rsidR="00C4263D" w:rsidRPr="00C4263D" w
+:rsidRDefault="00C4263D"><w:pPr><w:rPr><w:lang w:val="en-US"/></w:rPr
+></w:pPr><w:r w:rsidRPr="00C4263D"><w:rPr><w:lang w:val="en-US"/></w:
+rPr><w:t>December 12, 2014.</w:t></w:r></w:p><w:p w:rsidR="00C4263D" 
+w:rsidRPr="00C4263D" w:rsidRDefault="00C4263D"><w:pPr><w:rPr><w:lang 
+w:val="en-US"/></w:rPr></w:pPr><w:proofErr w:type="gramStart"/><w:r w
+:rsidRPr="00C4263D"><w:rPr><w:lang w:val="en-US"/></w:rPr><w:t xml:sp
+ace="preserve">The quick brown </w:t></w:r><w:proofErr w:type="spellS
+tart"/><w:r w:rsidRPr="00C4263D"><w:rPr><w:lang w:val="en-US"/></w:rP
+r><w:t>fox</w:t></w:r><w:proofErr w:type="spellEnd"/><w:r w:rsidRPr="
+00C4263D"><w:rPr><w:lang w:val="en-US"/></w:rPr><w:t xml:space="prese
+rve"> jumps over the lazy dog.</w:t></w:r><w:proofErr w:type="gramEnd
+"/></w:p><w:p w:rsidR="00C4263D" w:rsidRDefault="00C4263D"><w:pPr><w:
+rPr><w:lang w:val="en-US"/></w:rPr></w:pPr></w:p><w:p w:rsidR="00C426
+3D" w:rsidRPr="00C4263D" w:rsidRDefault="00C4263D"><w:pPr><w:rPr><w:l
+ang w:val="en-US"/></w:rPr></w:pPr><w:bookmarkStart w:id="0" w:name="
+_GoBack"/><w:bookmarkEnd w:id="0"/></w:p><w:sectPr w:rsidR="00C4263D"
+ w:rsidRPr="00C4263D"><w:pgSz w:w="11906" w:h="16838"/><w:pgMar w:top
+="1417" w:right="1417" w:bottom="1417" w:left="1417" w:header="708" w
+:footer="708" w:gutter="0"/><w:cols w:space="708"/><w:docGrid w:lineP
+itch="360"/></w:sectPr></w:body></w:document>

[download]
The content of the Word document was only these two lines: 
December 12, 2014.


The quick brown fox jumps over the lazy dog.

[download]

In reply to Re^3: To Read and Edit docx files in Windows 7 by Laurent_R
in thread To Read and Edit docx files in Windows 7 by DVCHAL

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