Hi, Pilou 
 
>>plug in,... 
 it's merely a little (poor) triviality. i am not software engineer...  
 
>>In theory the use of this plug can interfering with the normal program (decrease slowdown possible) or it's negligible? 
 it seems not to be noticeable, it just reloads some functions/methods each 1000miliseconds, though 
 
>>The double arrows on the right bottom side (expand / reduce )is also your plug or not ? 
 no!, you might read the introductory documentation more carefully......hehe... look here ..\MoI\MoI_Introduction.htm (point five - options/help)) 
 
 
Petr 
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