Hi, 

I have come across this piece of documentation:

Databricks does not support running Spark jobs from the web terminal. In addition, Databricks web terminal is not available in the following cluster types:

• Job clusters

• Clusters launched with the DISABLE_WEB_TERMINAL=true environment variable set.

• Clusters launched with access mode set to Shared.

Could someone please clarify the reasoning behind the number 1 and 3? 

Thank you.