Variables
Variables store numbers: points, lives, keys, levels. They can belong to a user, an object, the zone or a single run, and last while you are in the zone or forever.
6 boxes
Object variableDefines a variable that stores a value on each object, such as its lives.
User variableDefines a variable that each keko carries separately, such as their points.
Room variableDefines a single variable for the whole zone, such as a round counter.
Context variableDefines a temporary variable that only exists during one stack run.
Reference variableReads a shared variable from another of your zones in this zone.
Echo variableGives another name to a built-in variable, such as the keko's X position.
Verified notes (16)
Effect: Remove variable deletes the whole variable; it doesn't set it to 0.~teleport.target_idon a teleporter gives its pair. Writing it pairs it with another teleporter in the zone, same owner and same type, and their old pairs end up paired with each other.- Reference variable can point to a shared variable in another zone of the same owner even if that zone isn't open: it reads the last saved value.
Effect: Change variable value doesn't create the variable: you need 
Effect: Give variable first.- The Room variable always exists: it's 0 from the moment it's set up.
- Inside a stack the order is fixed: give → change → remove →
$(…)is read → messages → signal. It doesn't depend on height. - Dividing by 0 and modulo 0 change nothing. Division is integer division.
- “Set minimum” is a floor and “set maximum” is a ceiling.
- The Context variable is born and dies in each execution.
- A “while in room” variable is quietly deleted on leaving, without firing
Trigger: Variable changes. - A permanent variable stays after leaving and survives an island reload.
- Picking up an object and placing it again in the same zone keeps its variable.
- Picking up the variable's box deletes the variable and all its saved values. When you place it again, it's empty.
- A variable belongs to its zone. To use it in another one, make it shared and create a Reference variable; only the owner can set it up.
- A read-only Reference variable doesn't write.
- An Echo variable only accepts internal or smart variables, not ones created by users.