This documents will describe the steps necessary to request a SlapOS Theia from SlapOS. Access to SlapOS Using your validated account in Rapid.Space, you can access to Advanced SlapOS UI and apply for a SlapOS Theia. On the left sidebar, there has an button "Services", click it to enter the "Sevices" page. Request SlapOS Theia Now you are in the "Servies" page. On the page's navigation bar, you can find a button "Add", click it, you will enter a workflow which will create a software. The first stage is: 1/3 Select one Software. Here you will see a list which contains some software products, choose [EXPERIMENTAL] Web Runner VScode and click. You will enter the second stage: 2/3 Select one Release. Choose Theia and click. Now you are in the third stage: 3/3 Request Service: Webrunner theia. Type a title for your SlapOS Theia then click Proceed: Connection Parameters After requesting the service, wait for a few minutes (refreshing your page) until your url shows up in the Connection Parameter table. It is the URL for your Theia Frontend. The username and password are your login information.