Specifically I want to know, exactly what does the "zlclear" message do? Neither the [zl] help file nor the Max documentation makes reference to this message, but alt-rightclick shows that [zl] takes it. In this case, would every [zl] mode accept the message? Is there any messages that are unique to certain modes? Keep in mind, I’m using Max 4.6
According to the Max5 documentation, the "zlclear" message reinitialises the object and I assume it is the same in other versions. In layman’s terms it tells [zl] to forget everything you’ve already told it.
For example using [zl reg] the "zlclear" message would make it forget any list already sent to the right inlet and send nothing upon receiving a bang at its left inlet.