open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello everyone.
when a refined mesh is required, usualy a closed line must be drawn and a small value of edge length is then indicated (density). However in a complex geometry where drawing a closed line around the shoreline is almost impossible: how I can transform a closed line that I previously generated in GIS software (shapefile) into a closed linde of BK. I already imported my closed line (shapefile) then I save it as 2D line (.2is) however I can only resample it.
In other hand how to define mesh density on imported GIS closed lines (.SHP)

Any help is welcome

Mr Serrer has already ansewered this question. Just double clicking on the imported line to access the edit mode and change the value of density