====== string functions plugin ======

This plugin provides some basic string functions. This plugin will always be linked statically into LCD4Linux, and therefore does not follow the 'plugin_name::function' scheme.

----

===== Functions: =====

|strlen(s)|length of the string|
|strupper(s)|upper case version of s|
|strstr(haystack, needle)|position of substring //needle// in //haystack// or -1 if not found|
|substr(string, pos)|substring starting at //pos//|
|substr(string, pos, len)|substring starting at //pos//, up to //len// characters|


----