Understanding URL Syntax

You can create links between pages in your application using the following syntax:


f?p=App:Page:Session:Request:Debug:ClearCache:itemNames:itemValues:PrinterFriendly

Description:

App :  Application ID
Page : Page ID
Session :Identifies a session ID. You can reference a session ID to create hypertext links to other pages that maintain the same session state by passing the session number. 
Request : Sets the value of REQUEST. Each application button sets the value ofREQUEST to the name of the button which enables accept processing to reference the name of the button when a user clicks it
Debug : Displays application processing details. Valid values for the DEBUG flag include YES,NO,LEVELn
itemNames : Comma-delimited list of item names used to set session state with a URL.
itemValues : List of item values used to set session state within a URL. Item values cannot include colons, but can contain commas if enclosed with backslashes. To pass a comma in an item value, enclose the characters with backslashes.
PrinterFriendly : Determines if the page is being rendered in printer friendly mode. If PrinterFriendly is set to Yes, then the page is rendered in printer friendly mode. The value of PrinterFriendly can be used in rendering conditions to remove elements such as regions from the page to optimize printed output. 
https://docs.oracle.com/database/121/HTMDB/concept_url.htm#HTMDB03025