====== StrPos ======

Function return substring position in the string. 

<code pcmi>
StrPos(string, substring [, casesense [, offset]])
</code>
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|**string**|Source string.|
|**substring**|Substring for search.|
|**casesense**|Case sensitive search. 0 - case insensitive (default), 1 - case sensitive.|
|**offset**|Position in string, from search will begin. Default is 1.|

Function return an integer. If substring was found, then substring position returned, counting from 1. If not found returned 0. If offset is larger then source string length, returned 0.