# What's the correct format for the isam\_control.txt

**URL:** <https://forum.cmascenter.org/t/whats-the-correct-format-for-the-isam-control-txt/1784>\
**Category:** CMAQ-ISAM\
**Created:** [September 17, 2020, 10:45pm UTC](https://forum.cmascenter.org/t/whats-the-correct-format-for-the-isam-control-txt/1784 "2020-09-17T22:45:04Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![FengLiu](https://avatars.discourse-cdn.com/v4/letter/f/49beb7/32.png) [@FengLiu](https://forum.cmascenter.org/u/FengLiu)\
**Post date:** [September 17, 2020, 11:14pm UTC](https://forum.cmascenter.org/t/whats-the-correct-format-for-the-isam-control-txt/1784/2 "2020-09-17T23:14:28Z")

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Hello, Yusheng Zhao,  
Format 2 is right one. Please refer to [How to run CMAQ-ISAM](https://forum.cmascenter.org/t/how-to-run-cmaq-isam/1606/3).

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