diff --git a/src/agentCore.jl b/src/agentCore.jl
index ff4089f..e913e49 100644
--- a/src/agentCore.jl
+++ b/src/agentCore.jl
@@ -37,11 +37,11 @@ mutable struct yiemAgent <: agent             # High-level agent wrapper
   # Convert prepareContext()'s new Vector{agentMessage} to LLM message format
   formatMsgForLLM::Function    
 
-  # Actually invoke the LLM to get a completion response. The LLM response comes back as an 
-  # assistantMessage whose content is an array of content blocks. 
+  # A callable struct. Actually invoke the LLM to get a completion response. 
+  # The LLM response comes back as an assistantMessage whose content is an array of content blocks. 
   # Each block has a type — "text", "thinking", or "toolCall". 
   # The code filters for type === "toolCall" blocks, then passes them to executeToolCalls().
-  llmCall::Function                           
+  llmCall                         
                                               
   # Callback invoked before executing a tool call (ask for user permission/confirmation/abort, etc..)
   beforeToolCall::Union{Function, Nothing}