--- title: Explore - Modules Tab description: data lineage modules --- [Skip to content](https://help.zengines.ai/en/help/explore-modules-tab#main-content) [![Zengines-logotype-black-rgb](https://help.zengines.ai/hs-fs/hubfs/Zengines-logotype-black-rgb.png?width=192&height=50&name=Zengines-logotype-black-rgb.png)](https://help.zengines.ai/en/help?hsLang=en) Open main navigation Close main navigation How can we help you? - There are no suggestions because the search field is empty. 1. [Zengines Data Platform Help](https://help.zengines.ai/en/help?hsLang=en) 2. [Data Lineage](https://help.zengines.ai/en/help/data-lineage?hsLang=en) 3. [Analysis](https://help.zengines.ai/en/help/data-lineage?hsLang=en#analysis) June 22, 2026 # Explore - Modules Tab The **Modules** tab lists every program module in the project (COBOL, RPG, PL/I, and other ingested legacy languages). Use it to compare complexity, find programs by name or description, and drill into table, file, and variable interactions for one module. ### Module grid Each row is one module (program name). Typical columns help you gauge complexity: - Table **reads** and **writes** - File **reads** and **writes** - **Lines of code** - Count of **IF** statements Together these metrics give a quick sense of how large and branch-heavy a program is. #### Search and filter Module search applies **only** to: - **Module name** - **User-entered descriptions** on modules (including descriptions you add or that come from your team’s documentation workflow) It does **not** search program source, comments, or business logic text inside the code. For broader discovery—by concept, table behavior, or “where is X calculated?”—use **Ask a Lineage Question** on the dashboard. ### Module detail Select a module to open its detail view. You stay on the Modules tab; sections below describe what you will see. #### Tables Lists each SQL table interaction for this module: - Logical table name - **Actions**: read, write, insert, update - How many **fields** participate **Duplicate rows** — You may see the same table more than once. Common reasons: - The table is used in multiple places in the program - The table appears once for cursor **declaration** and again when the cursor is **used** Click a table row to see the **SQL statement** for that interaction and the **fields** involved. From there, follow links to the **Tables** or **Fields** tab, or to the **variable** that receives or supplies the data—often the next step for lineage. #### Files Shows **file in** and **file out** when **job language** sources (JCL, CL, CLLE, and related) have been ingested with the programs. You see logical file names and **data set names**. Links open the related **job** or **file** on those tabs. If file sections are empty, and files are used within the program, the project may be missing job definitions for those programs. See [Understanding your Data Lineage Project](https://help.zengines.ai/en/help/understanding-your-data-lineage-project?hsLang=en). #### Variables Lists variables defined or used in the module. **Sort by number of child variables** to surface record-like structures the program uses as inputs or outputs—often the working areas you care about for batch or reporting logic. Click any variable to open it on the **Variables** tab. ### Zengines Assist - Module Summaries On the module detail view, click **Summary** to generate a **Zengines Assist** module overview. After a few seconds you get a short **business functional summary** in plain English. Click **Tell Me More** for deeper sections, such as: - A functional view aimed at business readers - A **technical** view with variables and data lineage - **Inputs and outputs** (tables and files) - **Core processing** logic, including error handling where relevant Answers include hyperlinks to **tables**, **fields**, **variables**, and **jobs** so you can move straight into Explore. Regenerating **Summary** may produce different wording; deterministic counts and links in Explore stay the same until ingestion changes. 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