#current-output

Represents OmniMark's current output, a collection of output destinations.

  put #current-output "Mary had a little lamb"

  output "Mary had a little lamb"

This isn't very useful in itself, but it allows you to add a destination to current output by changing current output to #current-output and the new destination stream:

  global stream lamb
  process
     local stream mary
     open lamb as buffer
     open mary as file "mary.txt"
     output-to lamb
     put #current-output and mary "Mary had a little lamb.%n"
     using output as #current-output and mary
     do
        output "Its fleece was white as snow.%n"
     done