modifying display.mode

Hello!

I am looking at the following code, which I found online:

module_ui <- function(id) {
    ns <- NS(id)
    tagList(
        actionButton(ns("btn"), "Click me", style = "float: right;"),
        textOutput(ns("txt"))
    )
}

module_server <- function(id) {
    moduleServer(id, function(input, output, session) {
        txt <- eventReactive(input$btn, input$btn)
        output$txt <- renderPrint(txt()[[1]])
    })
}
#Next the shiny app
library(shiny)

ui <- {
    fluidPage(
        module_ui("mod")
    )
}

server <- function(input, output, session) {
    module_server("mod")
}

shinyApp(ui, server)

I run this with display.mode="showcase". I actually have 2 questions, please:
a. Is there a way to always display the code on the right hand side of the app, please?
b. Is there a way to copy the code to the clipboard, maybe using the rclipboard package, please?

Thanks so much,
Sincerely,
Erin