[TYPO3] How to use constants in TS condition

[Jan Zýka]

So, finally I found a solution. For those who are trying to solve the same,
turning something on on constant, here is the solution:

[globalVar = LIT:1 = {$constant_to_turnSomethingOn}]
  do smth
[ELSE]
 constant was not set to 1 ...
[GLOBAL]

see TSref page 42 ...