EXTERNPROTO slide-background [
  exposedField SFInt32 whichChoice
  ][ 
    "@vr-proto-pvl.wrl#slide-background"
    "../../proto/pvl.wrl#slide-background"
    "../../../@vr/proto/pvl.wrl#slide-background"
    "file:C:/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:D:/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:E:/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:F:/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:R:/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:Z:/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:C:/www/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:D:/www/online/@share/vr/proto/pvl.wrl#slide-background"
    "<a href=http://localhos>/online/@share/vr/proto/pvl.wrl#slide-background"
    "file:C:/www/online/@share/vr/proto/pvl.wrl#slide-background"
    "<a href=http://www.cs.vu.n>/online/@share/vr/proto/pvl.wrl#slide-background"
    "<a href=http://hush.cs.vu.n>/vr/proto/pvl.wrl#slide-background"
   ]