If you want to add an icon to a "One Line" script like Loop Selection for example

 script:/*Loop selection*/moi.geometryDatabase.selectLoop();



 
Just create a .js file with a text editor and make the same than above post #1! ;)

Very detailed method http://moi3d.com/forum/index.php?webtag=MOI_FRANCAIS&msg=485.20 for French readers! ;)