command after a given delay.
Please note that the command is executed asynchronously after the
given time has elapsed. Multiple commands can be queued, where the
delays are relative to the last queued command. This command is
intended to be used for queuing commands when taking screenshots
for documentation purposes.
|number of whole milliseconds to wait before executing the command|
|a command, including parameters to be executed after the given delay|
Deletes a track, identified by its index (starting from zero). If no track with the given index exists, this command exits with an error.