Can any body tell me what acactly mesh control tools. i had tried to give traingle control. i had selected 3 points. but how to select spacing. i mean to ask there is no option coming to select spacing. i had selected uniform spacing as type of spacing and at spcing box i am getting apply/cancel but i am not getting any selecting tool in gui. so how i have to select. is there any pre requesites to be given

if I understood you correctly, you should "insert spacing" and only then you define "mesh control" and choose that spacing defined previously should be used for this control.

Am i need to insert line spacing before meshing i.e. in design module it self or is there any other way in meshing module