====== CommonSubstring(text1, text2) ======
Category:  Text function

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=====Description=====
This function returns the longest substring common to both //text1// and //text2//.

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=====Arguments=====
^Argument^Type^Description^
|text1|Text|Any text, or value that can implicitly converted to text.|
|text2|Text|Any text, or value that can implicitly converted to text.|

**Return value type:** Text

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=====Remarks=====
This function is case sensitive.

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=====Examples=====

  commonsubstring( "Bicycle DX-349 black", "Velo DX-349 noir" ) //Returns " DX-349 " (note leading/trailing spaces)

  commonsubstring( "Bob", "David" ) //Returns empty value (no common strings found)


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===== See also =====
  * [[syntax:functions:contains]|Contains(text, look_for)]]
  * [[syntax:functions:find]|Find(text, look_for)]]