To refresh the applet, you can use the “FINS Teller UI Navigation” business service. This is the Siebel out of box/Vanilla service.
Update Record without using Siebel Operation step in Workflow is Siebel
How to check performance for particular Business Service and Method in Siebel
SIEBEL: How to check Script performance locally in Siebel Tools?
Pseudo Code to call WF Async and Sync Mode in eScript
Disabling/Hiding Custom button in Query Mode in Siebe;
How to Open PDF or any file from Browser Script
How to Open PDF or any file from Server Script using Clib.system()