> ## Documentation Index > Fetch the complete documentation index at: https://mux.coder.com/llms.txt > Use this file to discover all available pages before exploring further. # Manual Compaction > Commands for manually managing conversation context Manual compaction commands give you direct control over your conversation history. ## Start Here Start Here allows you to restart your conversation from a specific point, using that message as the entire conversation history. This is available on: * **Plans** — Click "🎯 Start Here" on any plan to use it as your conversation starting point * **Final Assistant messages** — Click "🎯 Start Here" on any completed assistant response Start Here This is a form of "opportunistic compaction" — the content is already well-structured, so the operation is instant. You can review the new starting point before the old context is permanently removed, making this the only reversible compaction approach. *** ## Compact (AI Summarization) Compress conversation history using AI summarization. Replaces the conversation with a compact summary that preserves context. ### Syntax ``` /compact [-t ] [-m ] [continue message on subsequent lines] ``` ### Options * `-t ` — Maximum output tokens for the summary (default: \~2000 words) * `-m ` — Model to use for compaction (sticky preference). Supports abbreviations like `haiku`, `sonnet`, or full model strings ### Examples **Basic compaction:** ``` /compact ``` **Limit summary size:** ``` /compact -t 5000 ``` **Choose compaction model:** ``` /compact -m haiku ``` Use Haiku for faster, lower-cost compaction. This becomes your default until changed. **Auto-continue with custom message:** ``` /compact Continue implementing the auth system ``` After compaction completes, automatically sends "Continue implementing the auth system" as a follow-up message. **Multiline continue message:** ``` /compact Now let's refactor the middleware to use the new auth context. Make sure to add tests for the error cases. ``` Continue messages can span multiple lines for more detailed instructions. **Combine all options:** ``` /compact -m haiku -t 8000 Keep working on the feature ``` Combine custom model, token limit, and auto-continue message. ### Notes * Model preference persists globally across workspaces * Uses the specified model (or workspace model by default) to summarize conversation history * Preserves actionable context and specific details * **Irreversible** — original messages are replaced * Continue message is sent once after compaction completes (not persisted) *** ## Clear All History Remove all messages from conversation history. ### Syntax ``` /clear ``` ### Notes * Instant deletion of all messages * **Irreversible** — all history is permanently removed * Use when you want to start a completely new conversation