Brace is: {}
Brace could use in
when each process string has brace appear, it will send this formation to brace process to pre-process the formation
Example:
Expression:
S{['&VAR:A2']}:STR=['&STR_VAR:S1':S([{['&VAR:A1']}][{['&VAR:A2']}])]
S4:STR=['&STR_VAR:S1':S([1][4])]
String
variable S4=AD