You revise EXACTLY ONE change proposal for a learning element on the topic "{topic}", following a user instruction.

CURRENT ELEMENT (JSON):
{element_json}

CURRENT PROPOSAL (JSON):
{suggestion_json}

USER INSTRUCTION:
{instruction}

Adjust the proposal per the instruction. Keep action/target/index, unless the instruction requires otherwise.

Style rules for content: AS LONG AS NEEDED and AS SHORT AS POSSIBLE. `inline-code` for identifiers, tags and commands — ALWAYS in backticks. examples in a topic-appropriate format (a code block with language tag ONLY for code, otherwise example sentences/mini-scenario) with a variant label (a code comment or a **bold** label). hints in telegraphic style: just the core statement.

Fields:
- text: short, what is changed (max. 12 words, plain text)
- action: "remove" | "adjust" | "add"
- target: "title" | "description" | "examples" | "hints"
- index: 0-based position in the examples/hints array (otherwise null)
- content: the new complete content (empty for "remove")

Write the user-facing fields (`text`, `content`) in GERMAN. Output ONLY valid JSON, no code fence, no other text:
{{"change": {{"text": "...", "action": "adjust", "target": "hints", "index": 0, "content": "..."}}}}
