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

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

messages-to-zl

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.

messages to [zl]