> ## Documentation Index > Fetch the complete documentation index at: https://docs.pixldata.com/llms.txt > Use this file to discover all available pages before exploring further. # Comment > The Comment Tool is the primary communication layer within PixlHub. It is used to flag edge cases, discuss problematic assets, or provide specific feedback during the labeling and review process. Comment Tool 1 ### **Adding Comments** There are two ways to initiate a conversation within a task: 1. **Coordinate-Based Comments:** Select the Comment Tool from the **Smart Tool Palette** and click on a specific point on the canvas. This opens a modal window where the user can type their message and save it by clicking **"Add Comment."** 2. **Annotation-Specific Comments:** A comment can be linked directly to an existing label (e.g., a specific Bounding Box or Polygon). By right-clicking an annotation and selecting "Add Comment" from the **Context Menu**, the platform automatically embeds the **Annotation ID** into the message, ensuring there is no confusion about which object is being discussed. Comment Tool 2 ### **Collaboration Features** * **Mentions:** Users can use the **"@"** symbol to mention and notify specific team members within a comment. This is the standard way to assign a query to a manager or a fellow annotator. * **Centralized Tracking:** All comments associated with a project are aggregated under the **Comments Tab** in the **Project Details** page. This provides a high-level view of all ongoing discussions and unresolved issues across the entire dataset. Comment Tool 3 ### **Managing Comments** To maintain a clean workflow, comments follow a set of permission rules: * **Resolving & Deletion:** A comment can be marked as "Resolved" once the issue is addressed. * **Permissions:** Standard users can only delete or resolve the comments they have created. **Project Managers**, however, have full administrative rights to resolve or delete any comment within the project to ensure the workflow remains unblocked.