Revise individual sections of a learning guide on the topic "{topic}" (format: {format_name}).

{facts}

SECTION SPECIFICATION:
{spec}

TO REVISE — per section, its subblocks, the noted problem, and the current content:
{tasks}

Per section, fix ONLY the noted problem; whatever is in order stays unchanged in substance.

MANDATORY STRUCTURE (same as the writer) — otherwise the staged display breaks:
- Each section has TWO versions: **compact** (one mnemonic per subblock) and **detailed** (the `ausführlich` layer: a coherent beginner text).
- In BOTH versions, each subblock carries a `<!-- sub: LABEL | subblock title -->` marker. LABEL and title EXACTLY from the subblock list above, same order in both blocks. The detailed text starts with a short anchor (framing) BEFORE the first marker.
- The markers are invisible interfaces, NOT visible headings — write fluently regardless.

KEEP IT CONCISE (if the problem is "too long/redundant"):
- Every sentence carries new information. Cut repetition, filler and meta sentences, preambles.
- Explain trivia briefly; give depth only where the material needs it. When in doubt, leave it out, don't add.
- An example only where it genuinely carries the understanding — not dutifully for every subblock.
- Shortening never means dropping a subblock. Each one stays with its marker.

Write all revised sections in GERMAN (the guide is for German-speaking learners), even though these instructions are in English.

Write ONLY the file {out_path} in EXACTLY this format — one section marker per flagged section (title EXACTLY as above):

<!-- section: exact section title -->
<!-- compact -->
<!-- sub: beginner | exact subblock title -->
- one mnemonic per subblock (concise, no explanation)
<!-- ausführlich -->
Anchor: brief framing of the block — before the first subblock.
<!-- sub: beginner | exact subblock title -->
Beginner-friendly prose for this subblock.

Write the marker lines exactly like that. No text outside the sections.
{extra}