This application demonstrate, how can we create expand collapse layout functionality by simply modifying the Outsystems existing left menu layout. 

Lots of people asked this question over the forum can we create expand collapse functionality i.e. why I have created this example which might help other developers in understanding, how can we use simple JavaScript code to achieve this functionality.   

Key Areas:

• Please check the theme code consist of variable to control the width of the menu.
• Expand collapse client action.
• Menu text Css class. 
• Also check the theme max width property, I have kept it blank to use the full width instead of 1280.