Expression editor
Expression editor shows list of standard and user defined
macro variables, also it allows each operator to create
his own "favorite" list of variables. There are buttons that allow you to filter standard macro variables by
category.
Several menu items help to work with variables (popup menu appears when you click right mouse button on macro
variable in the list):
- Insert into expression (equivalent to double click on the variable)
- Add variable to favorites (Ctrl+C)
Favorite variables can be moved up (Ctrl+Up) and down (Ctrl+Down) or sorted alphabetically.
Also Expression Editor checks expressions for quotation marks and parenthesis, marks such elements in red when error detected, shows warning label with hint.
There are special buttons 
in Test Properties dialog
that allow you to bring up "Expression editor" window for "Warning", "Normal", and "Tune up Reply" expressions
editing.
Also "Expression editor" can be used when you setup expressions for "advanced mode"
actions and specific properties for the following actions:
Send E-Mail
Log Event
SQL Query
Send data to TCP/UDP port
Syslog
Expression editor shows list of standard and user defined
macro variables, also it allows each operator to create
his own "favorite" list of variables. There are buttons that allow you to filter standard macro variables by
category.