Replace clear_workspace() with erase().
Replace clear_workspace() with erase().

lotrfan/dvtm,delphinus35/dvtm,tgvaughan/dvtm,gridsystem/dvtmx,armanbilge/dvtm,gridsystem/dvtmx,tgvaughan/dvtm,lotrfan/dvtm,lotrfan/dvtm,delphinus35/dvtm,tgvaughan/dvtm,armanbilge/dvtm