> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/mss-extensibility/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/mss-extensibility/mss-5.0/untitled-1/document/ext_documents_openmodule.md).

# EXT\_Documents\_OpenModule

Function to ask MSS to open the Documents screen. 

*Input parameters:* 

* inCustomerCode - Customer code to select automatically; 

*Output parameters:* 

* outResultCode - Return code: 0 – Done / < 0 User canceled selection or error occurred;