====== 1.2.5 Technical messages ======
WhatsApp sometimes generates messages when something happens in a chat. If, for example, a user leaves a group, the message can be //Peter left// or //Peter hat die Gruppe verlassen//.  In order to get one wording for these messages, we encoded them, e.g. ''actionQuserOUT''.

This results in the following values for the field //msg_type//:
  * ''actionQiconDEL'' the avatar was deleted
  * ''actionQiconUPD'' the avatar was changed
  * ''actionQsubjUPD'' the name of a group was updated
  * ''actionQuerIN'' a speaker was added to a group
  * ''actionQuserOUT'' a speaker was removed or removed themselves
  * ''actionQuserREM'' Meta text about a speaker in a group chat

Other options in the field //msg_type// are:

  * '' content'' A message with text written by a communication partner
  * '' encrypted'' A message that was encrypted 
  * '' media'' A message that contained a media file such as a sound file, an image or a video
  * '' no consent'' A message written by a communication partner who did not give [[01_corpus:02_preprocessing:02_without_permission|permission]] for his texts to be used.

Since most of these technical messages do not contain any text, they are also marked in the field //tok// as follows:


  * '' mediaQremoved'' for media that we removed
  * '' emptyQmsg'' an empty message
  * '' encryptedQmsg'' some informants encrypted their messages
  * '' systemQspk53'' says very generally that speaker 53 did something from the first bullet list above, e.g. leave a group.