This article offers additional assistance on using filters in EloView 3

Use ':' for separating key & value and parenthesis ("values") for 'IN' or 'NOT IN'.
Use 'and','or','in','and not', 'not in' or 'AND','OR','IN','AND NOT', 'NOT IN' for multiple key-value concatenation.
Wrap value within ' or " after colon for suggestion list of values.
EQL query example : status:"online" AND orientation:"landscape" OR contentstatus : "Success" AND name in ("k143") OR  sitename not in ("vienna")