"-" Null Trigger
Select "-" on a trigger line to turn off (delete) that trigger.
"&" Macro Connector
A trigger with the "&" macro connector will execute in sequence after the trigger line immediately before it.
So, to create a macro, simply start with a first line that mentions the appropriate trigger (like a hard button press, for example), and then use the line(s) after it with "&" in place of the trigger to specify additional actions for that same trigger.
">" List Menu Connector
A trigger line with the ">" connector simply adds an entry into a list menu started from any trigger immediately above it.
So, to build up a list menu with several items, just start with a first line that mentions the appropriate trigger (like a hard button press, for example), and then use the line(s) after it with ">" in place of the trigger to specify additional items for that menu. The "Fill" actions are particularly relevant for this type of menu.
"*" Star Menu Connector
A trigger line with the "*" connector simply adds an entry into a star menu started from any trigger immediately above it. So, to build up a star menu with several items, just start with a first line that mentions the appropriate trigger (like a hard button press, for example), and then use the line(s) after it with "*" in place of the trigger to specify additional items for that menu.
The order in which these items are specified tells Apt where they go in the Star-shaped menu (which reflects your device's hard-button positions): HK2, HK3, HK1, HK4, NavUp, NavDown, NavLeft, NavRight, NavCenter, and after that up to 8 other items get added as buttons on the top of the screen: you can tap on them but you can't use hard keys to get to them.