described in the "string.txt" file.
ddialog (int) - deletes given dialog (if no argument or -1, deletes the last
dialog). Does not work when actually playing a dialog.
+fixtype (int) (int) - fixes the type (2nd arg) of the given dialog (1st arg).
play (int) - plays given dialog.
+fixrotation - when playing a dialog, sets the in-dialog yaw of the current
+ participant to its out-of-dialog yaw value.
Graphics
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