L'Aiglon

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: L'Aiglon

Indicates a relationship to the work titled "L'Aiglon," such as authorship, performance, adaptation, or other direct involvement with that specific play or its derivative productions.