srcMap

Describes how the ContentBlock string was modified into the text.value string intended for the SpeechSynthesis engine. An example srcMap value is: "A0:7,D0:3,D9:2"

Operations:

• Add (offset, count): A: For example: The string "A dog." => "Image: A dog" would result in: Add (offset: 0, count: 7) "A0:7"

• Delete (offset, count): D: For example " Some text " => "Some text" would result in: Delete(0, 3), Delete(9, 2) "D0:3,D9:2"

• Replace (offset, deleteCount, addCount): R:: Replace operations are treated as a Delete + Add action. "R5:8:1"