digraph "my-digraph"
{

  // Windows 10 Home 64 bit 22H2 19045.6216
  //
  // syntax error with dot - graphviz version 13.1.2 (20250808.2320)
  // passes with dot - graphviz version 12.2.1 (20241206.2353)
 
  "my-label" [fontsize=16 label=<label-with-fontsize>]
  
  "empty-label" [label=<>]

}